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  • OCT Scan Normal Eye vs 8 Most Common Pathologies

    normal abnormal oct scan
    Maria Znamenska
    31.10.2024
    14 min read

    OCT Scan Normal Eye vs. 8 Most Common Pathologies

    Differentiating between an OCT scan of a normal eye vs. a pathological one is a practical skill gained after years and years of practice. However, educating yourself on the basic differences will speed up the process. Understanding the “why” and “how” behind any changes on the OCT scan, compared to a normal macula OCT, will speed up your learning curve and deepen your expertise as a retinal expert.

    The article’s first part focuses on key OCT features and their meaning as a structural change for retinal architecture. The second part discusses the most recognizable OCT features of eight common pathologies.

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    OCT Scan: Normal Eye

    When evaluating an OCT scan, the most logical step is to understand how a normal macula OCT should look. The most telling feature across all scans is the contrast between light and dark areas. Typically, the nerve fiber layer and the underlying ganglion cell layer appear brighter than the densely packed nuclear layers. This is followed by the inner plexiform layer interface, which presents as a bright, hyperreflective area.

    The inner nuclear layer, composed of densely packed nuclei, appears dark. This is followed by the outer plexiform layer, the outer nuclear layer, and Henle’s layer. The external limiting membrane, an important landmark for assessing retinal health, is also visible. The ellipsoid zone (EZ) is another bright layer, while the interdigitation zone may not always be distinguishable from the underlying RPE layer, even in healthy eyes. Finally, the RPE and inner choroid appear hyperreflective.

    normal macula oct

    Structure

    The ELM and EZ are critical structures to assess. In a normal macula OCT, the distance between the EZ and ELM is shorter than between the EZ and the RPE. The apparent “elevation” of the EZ in the foveal center results from the elongated outer segments of the foveal cones.

    It’s important to remember that not all retinal structures are readily visible on a normal macula OCT. For example, Henle’s fiber layer is more easily distinguished in the presence of retinal pathology, such as swelling or thinning. Similarly, Bruch’s membrane is usually not visualized unless there is a separation between the RPE and Bruch’s membrane, often indicative of disease.

    Thickness

    Choroidal thickness is another key factor in OCT assessment. A general rule of thumb is that the choroid (between the RPE and the outer choroidal boundary) is approximately as thick as the retina. Thinning of the choroid may be observed in myopic or older patients, while marked choroidal thickening can raise suspicion for diseases like central serous retinopathy.  

    The OCT scan also provides information about laterality. The nerve fiber layer is characteristically thicker near the optic nerve head.  Conversely, if the nerve fiber layer is not visualized in its expected location on an otherwise OCT normal scan, it could signal significant nerve fiber layer loss, potentially due to glaucoma or other optic neuropathies.

    Reflectivity

    Specific OCT terminology helps describe scans and differentiate normal findings from pathology.

    Two fundamental concepts in OCT interpretation are hyporeflectivity and hyperreflectivity, which form the basis for understanding the structural composition of the retina as visualized in an OCT scan.

    Hyporeflectivity refers to the increased light transmission capacity of a structure. The OCT scanning laser beam passes through hyporeflective structures with minimal reflection. The quintessential example of a hyporeflective structure is the vitreous humor. It appears as a dark area in the uppermost portion of a normal OCT scan, situated above the retina.

    But hyporeflectivity can also be pathological, deviating from the patterns observed in a normal macula OCT; in the retina, it manifests in three primary ways.

    Like the vitreous, subretinal fluid exhibits high light transmission and appears black on OCT. A uniformly black region suggests the fluid lacks cellular debris or other inclusions.

    normal abnormal oct scan

    Subretinal fluid on OCT

    Fluid can also accumulate within the retinal layers, for example, between the layers of the neuroepithelium. This intraretinal fluid also appears hyporeflective on OCT.

    oct scan normal eye

    Intraretinal fluid on OCT

    Following a degenerative process within the retina, a cavity or void may form where retinal tissue has been lost. These degenerative cavities lack the cellular components necessary to reflect light and thus appear as dark spaces on OCT.  It’s important to differentiate these cavities from cystic spaces, which may have distinct clinical implications.

    One example is outer retinal tubulations. While associated with various diseases, outer retinal tubulations (ORTs) generally indicate outer retinal degeneration and atrophy.

    normal macula oct

    Outer retinal tubulations on OCT

    Hyperreflectivity, unlike hyporeflectivity, indicates structures with high light reflectance. On the grayscale spectrum of an OCT image, hyperreflective structures appear progressively whiter. 

    The retinal pigment epithelium (RPE) complex and Bruch’s membrane are considered the most hyperreflective structures in a normal macula OCT.

    Pathological processes can introduce new hyperreflective elements within the retina, aiding in differentiating normal and abnormal OCT scans. A typical example is hard exudates, frequently observed in diabetic retinopathy. These lipid-rich deposits are extremely dense, causing them to appear bright white on OCT due to the complete reflection of incident light. Furthermore, this high density leads to a shadowing effect beneath the deposits, caused by strong backscattering of the OCT signal.

    normal abnormal oct scan

    Hard exudates and shadowing on OCT

    Epiretinal membranes (ERMs) – a thin membrane or layer of scar tissue that forms over the retina – are also hyperreflective. It is composed of dense connective tissue with high light-reflecting properties and appears white on OCT scans.

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    Integrity

    Beyond hypo- and hyperreflectivity, OCT interpretation involves assessing the structural integrity of retinal layers. For instance, in an OCT scan of a normal eye, Bruch’s membrane appears as a thin, continuous line underlying the retinal pigment epithelium (RPE). The RPE is a monolayer of cells, ideally presenting with a smooth and uniform optical density. However, some pathologies, particularly early stages of age-related macular degeneration (AMD), may show unevenness or integrity loss in the RPE and Bruch’s membrane complex. 

    Disruption of the ellipsoid zone (EZ) is a particularly concerning finding on OCT, often indicating photoreceptor damage. Significant disruption of the EZ in the central macula is a strong biomarker for adverse visual outcomes.

    The closer the loss of integrity extends toward the foveal center, the poorer the visual prognosis tends to be.

    oct scan normal eye

    Ellipsoid zone disruption on OCT

    OCT also plays a crucial role in visualizing and characterizing breaks in the structural integrity of the retina. These breaks, commonly referred to as retinal tears or holes, can be classified as full-thickness or partial-thickness, depending on the extent of retinal involvement.

    Full-thickness breaks completely separate all retinal layers, while partial-thickness breaks involve only some retinal layers. OCT allows for precise delineation of the layers involved and the overall morphology of the break.

    Retinal holes can also be categorized by their location. Macular holes, as the name suggests, involve the central retina and can lead to significant central vision loss and require prompt attention.

    normal macula oct

    Lamellar macular hole on OCT

    Non-macular holes occur outside the central macular region, often in the peripheral retina. While they may not cause immediate central vision disturbances, they can still lead to serious complications, such as retinal detachment, if left untreated.

    Definition

    The blurring of retinal structures, or loss of definition, is another key OCT concept. This loss of the retina’s normal layered organization, seen in diseases like AMD, manifests as indistinct layers merging into a homogenous mass.

    normal macula oct

    Disorganisation of retinal inner layers on OCT

    Hypertransmission in OCT refers to enhanced signal penetration due to reduced blockage of the OCT light signal. This phenomenon is frequently observed in geographic atrophy, a late stage of AMD characterized by the atrophy of the retinal pigment epithelium, choriocapillaris, and photoreceptors.

    normal abnormal oct scanHypertransmission on OCT

    In a normal macula OCT, a signal is attenuated as it traverses the various retinal layers, with a portion of the signal being reflected to the detector. However, in geographic atrophy (GA), the loss of RPE and other retinal structures reduces this attenuation, allowing the OCT signal to penetrate deeper into the choroid. This increased penetration results in a stronger signal return from the choroidal layers, creating essentially a “corridor” of enhanced signal penetration through the atrophic areas of the retina.  This deep penetration and strong signal return, unfortunately, indicate significant retinal damage and are associated with a poor visual prognosis.

    Displacement

    Another term used to describe OCT scan results is elevation. It refers to the upward displacement of retinal structures from their normal anatomical position. In the context of age-related macular degeneration (AMD), elevation is frequently associated with the presence of drusen.

    Drusen are extracellular deposits that accumulate between the retinal pigment epithelium (RPE) and Bruch’s membrane. They are a hallmark of AMD and can vary in size, shape, and composition.  Drusen are typically categorized as hard, soft, or confluent based on their ophthalmoscopic appearance.

    oct scan normal eye

    Hard and soft drusen on OCT

    In contrast to elevation, depression in OCT describes the inward displacement or concavity of retinal structures.  This can be a manifestation of various pathological processes, with a prominent example of degenerative myopia.

    oct scan normal eye

    Degenerative myopia on OCT

     

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    OCT scan: normal eye transformation through pathologies

    Age-related macular degeneration (AMD)

    AMD is an acquired degenerative macular disease usually affecting individuals over the age of 55 years. It is characterized by pathologic alterations of the outer retina, retinal pigment epithelium (RPE), Bruch’s membrane, and choriocapillaris complex, including drusen formation and pigmentary changes.

    AMD is a progressive disease, and in advanced stages, central geographic atrophy and neovascularization, may develop and reduce vision. OCT plays a critical role in distinguishing between the different stages and forms of AMD, particularly when compared to the features of an OCT normal scan.

    Wet AMD

    normal abnormal oct scan

    Neovascular or “wet” age-related macular degeneration (nAMD) arises from the aberrant growth of choroidal vessels that penetrate Bruch’s membrane and invade the subretinal space. These abnormal vessels leak fluid and blood, disrupting the retinal architecture and causing vision loss. 

    Several key OCT features can signal the presence and activity of nAMD in comparison to a normal OCT scan:

    • Fluid Accumulation: The presence and location of fluid are hallmarks of nAMD (hence the term ‘wet AMD’). Intraretinal fluid, appearing within the retinal layers, often signifies more severe disease and a poorer visual prognosis than subretinal fluid, which accumulates beneath the retina.
    • RPE Detachment: Serous PED appears as a dome-shaped elevation of the RPE due to fluid accumulation beneath it. PEDs often accompany nAMD and can vary in size and shape.
    • Disruption of Retinal Layers: nAMD can disrupt the normal retinal architecture, particularly the photoreceptor layer. Damage to the ellipsoid zone (EZ) and external limiting membrane (ELM) is visible on OCT and correlates with visual impairment.
    • Hyperreflective Foci: Hyperreflective dots (HRDs) are small, bright spots scattered throughout the retina.
    • Subretinal Hyperreflective Material (SHRM): Appears as a hyperreflective band between the retina and RPE. Its composition varies but may include fluid, fibrin, blood, and neovascular tissue; it can be associated with poorer visual outcomes.
    • RPE Tears: These are disruptions in the RPE monolayer, often occurring in areas of PED. RPE tears can lead to significant vision loss and are an important complication of nAMD.
    • Choroidal Changes: nAMD can also affect the choroid, the vascular layer beneath the RPE.

    Dry AMD

    normal abnormal oct scan

    In its early stages, Dry AMD is characterized by drusen and pigmentary abnormalities resulting from alterations in the retinal pigment epithelium (RPE). Later, it can progress to geographic atrophy (GA) or outer retinal atrophy.

    The three classic findings in Dry AMD are drusen, pigmentary changes, and geographic atrophy.

    Drusen are classified as:

    • small (<65 um), 
    • medium (65 – 124 um), 
    • or large (>125 um). 

    While both drusen and pigmentary changes can appear as yellowish deposits in the retina, pigmentary changes are often more varied in color (ranging from yellow to brown or black) and less defined in shape than the generally circular drusen.

    Geographic atrophy typically begins in the paracentral macula, often surrounding the fovea in a horseshoe pattern. It can eventually involve the fovea itself, leading to severe vision loss.

    Diabetic Retinopaty (DR)

    normal macula oct

    Diabetic retinopathy (DR), a leading cause of vision loss in working-age populations, is characterized by retinal vascular abnormalities. It progresses from non-proliferative DR (NPDR), marked by vascular leakage and capillary occlusion, to proliferative DR (PDR), where neovascularization can lead to severe vision impairment through vitreous hemorrhage or retinal detachment.

    OCT can aid in identifying the earliest sign of DR: microaneurysms. They appear as small, distinct, oval-shaped, hyperreflective, walled structures associated with microvascular damage. Specifically, the structural weakness of the vessel wall of MAs causes fluid leakage, resulting in edema.

    oct scan normal eye

    Another consequence of microaneurysm formation is the progression to intraretinal hemorrhages (IRH), often called ‘dot-blot’ hemorrhages. These appear as hyperreflective foci on OCT cross-sections, with varying degrees of opacification.

    Diabetic macular edema (DME) can occur at any stage of the disease and is the most common cause of vision loss in those with diabetes. It results from a blood-retinal barrier breakdown, leading to fluid leakage and retinal thickening.

    Retinal vein occlusions

    normal macula oct

    Retinal vein occlusions (RVOs) are blockages of the retinal veins responsible for draining blood from the retina. These blockages can affect either the central retinal vein (CRVO) or one of its branches (BRVO). RVOs are more prevalent in older individuals and those with underlying vascular conditions such as high blood pressure, high cholesterol, a history of heart attack or stroke, diabetes, or glaucoma. The primary vision-threatening complications of RVO are macular edema, which involves fluid accumulation in the central retina, and retinal ischemia, which results from insufficient blood flow to the retina.

    While both Central Retinal Vein Occlusion (CRVO) and Branch Retinal Vein Occlusion (BRVO) involve blockage of a retinal vein, the underlying cause and location of the blockage differ.

    CRVO occurs when a thrombus (blood clot) blocks the central retinal vein near the lamina cribrosa, where the optic nerve exits the eye.

    In contrast, BRVO typically occurs at an arteriovenous crossing point, where a retinal artery and vein intersect. Atherosclerosis (hardening of the arteries) can compress the vein at this crossing point, leading to thrombus formation and occlusion.

    In CRVO, the retina often exhibits extensive intraretinal hemorrhages, dilated and tortuous veins, and cotton-wool spots. This constellation of findings is classically described as a “blood and thunder” appearance. In BRVO, the signs are typically localized to the area of the retina drained by the affected vein. Macular edema, characterized by retinal thickening and cystoid spaces within the retina, is a common finding in CRVO and BRVO and can significantly contribute to vision loss.

    Central serous retinopathy

    normal abnormal oct scan

    Central serous chorioretinopathy (CSCR) is a common retinal disorder that causes visual impairment and altered visual function. It is classified as a pachychoroid disease, including conditions like polypoidal choroidal vasculopathy and pachychoroid neovasculopathy. 

    OCT imaging in CSCR often reveals a thicker-than-average choroid.

    This diagnostic is particularly useful in cases where clinical examination findings are inconclusive, distinguishing subtle differences between normal and abnormal OCT scans in terms of structural changes, such as small pigment epithelial detachments (PEDs) and hyperreflective subretinal fluid, that may not readily appear on clinical exams.

    Furthermore, OCT is valuable for monitoring disease progression and resolution in chronic CSCR cases. A distinguishing feature that can also be seen in CSR is the appearance of the retinal pigment epithelium: the RPE line typically appears straight in non-affected areas, while it can appear wavy or irregular in areas with CSCR.

    Epiretinal membrane (Epiretinal fibrosis) 

    oct scan normal eye

    Epiretinal fibrosis (epiretinal membrane/macular pucker) is a common condition affecting the central retina, specifically the macula. It is characterized by a semi-translucent, avascular membrane that forms on the retinal surface, overlying the internal limiting membrane (ILM), which is absent on a normal macula OCT.

    OCT plays a crucial role in assessing the severity of ERMs, revealing the extent of macular distortion and the involvement of retinal layers.

    OCT findings in ERMs are used to stage the severity of the membrane, ranging:

    • Stage 1: ERMs are mild and thin. Foveal depression is present.
    • Stage 2: ERMs with widening the outer nuclear layer and losing the foveal depression.
    • Stage 3: ERMs with continuous ectopic inner foveal layers crossing the entire foveal area.
    • Stage 4: ERMs are thick with continuous ectopic inner foveal and disrupted retinal layers.

    Retinal detachment

    normal abnormal OCT scan

    Retinal detachment is an important cause of decreased visual acuity and blindness, a common ocular emergency often requiring urgent treatment.

    It occurs when subretinal fluid accumulates between the neurosensory retina and the retinal pigment epithelium through three mechanisms:

    • Rhegmatogenous: a break in the retina allowing liquified vitreous to enter the subretinal space directly.
    • Tractional: proliferative membranes on the surface of the retina or vitreous pull on the neurosensory retina, causing a physical separation between the neurosensory retina and retinal pigment epithelium
    • Exudative: accumulation of subretinal fluid due to inflammatory mediators or exudation of fluid from a mass lesion/insufficient RPE function

    OCT helps identify foveal status and diagnose tractional or exudative retinal detachments, aiding in treatment planning.

    Macular hole

    normal macula oct

    Macular holes are full-thickness defects of retinal tissue involving the anatomic fovea and primarily the foveola of the eye. They are thought to form due to anterior-posterior forces, tangential forces and weakening in the retinal architecture that result in openings in the macular center. 

    The International Vitreomacular Traction Study (IVTS) Group formed a classification scheme of vitreomacular traction and macular holes based on OCT findings:

    • Vitreomacular adhesion (VMA): No distortion of the foveal contour; size of attachment area between hyaloid and retina defined as focal if </= 1500 microns and broad if >1500 microns
    • Vitreomacular traction (VMT): Distortion of foveal contour present or intraretinal structural changes in the absence of a full-thickness macular hole; size of attachment area between hyaloid and retina defined as focal if </= 1500 microns and broad if >1500 microns.
    • Full-thickness macular hole (FTMH): Full-thickness defect from the internal limiting membrane to the retinal pigment epithelium. Described 3 factors: 1) Size – horizontal diameter at narrowest point: small (≤ 250 μm), medium (250-400 μm), large (> 400 μm); 2) Cause –  primary or secondary; 3) Presence of absence of VMT.

    Glaucoma

    oct scan normal eye

    Glaucoma is a progressive optic neuropathy that is multifactorial and degenerative. It is characterized by the death of retinal ganglion cells (RGCs) and their axons, leading to the characteristic optic disc and retinal nerve fiber layer (RNFL) structural changes and associated vision loss. One of the most effective ways to get information about nerve states is OCT.

    The Glaucoma OCT test provides valuable information about ganglion cells: damage to the ganglion cells or their processes leads to thinning across respective layers, which we can measure as the thickness of the ganglion cell complex. 

    Key things to focus on when working with OCT for glaucoma detection:

    • Look for thinning of the pRNFL, particularly in the inferior and superior quadrants, asymmetrical thinning between a patient’s eyes
    • Assess the thickness of the ganglion cell-inner plexiform layer, macular RNFL, and the overall ganglion cell complex. 
    • Monitoring: Seek significant decreases over time in pRNFL thickness (≥5 μm globally, ≥7-8 μm in specific sectors) or in average GCIPL thickness (>4μm).

    AI-powered OCT interpretation tools, such as Altris AI, AI for OCT, can further assist clinicians by providing automated calculations of RNFL thinning in the upper and lower hemispheres and the asymmetry levels between them.

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    Summing up

    OCT has revolutionized ophthalmology, bringing a wealth of new details and challenges. The human eye can easily miss subtle abnormalities on complex scans, making accurate interpretation critical. While experience is essential, relying solely on  “learning by doing” poses risks. 

    AI-powered OCT interpretation software bridges this gap, offering a safety net during the learning curve and beyond. AI-powered second opinion on OCT scans enhances diagnostic accuracy, empowers clinicians, and allows them to spend more time for a meaningful connection with patients.

  • Optometry Practice Growth: Business Cases

    how to grow an optometry practice
    Altris Inc.
    03.10.2024
    8 min read

    Optometry practice growth: business cases

    The client. Dr. William C. Fruchtman’s Optometry Practice, owned and operated by Dr. William C. Fruchtman, O.D., is located in East Rutherford, New Jersey, an inner-ring suburb of New York City. With over 30 years of service to the community, the practice provides comprehensive eye care, including regular eye examinations, contact lenses, and glasses prescriptions. 

    Dr. William Fruchtman’s practice continually seeks opportunities to add value to its services. He is cultivating his expertise in dry eye disease and macular degeneration, implementing advanced technologies, and using another effective strategy to expand his patient base – communicating with patients in their preferred language. Knowing that clear communication is vital to good care, Dr. William C. Fruchtman’s team includes members who speak Spanish and Polish. As such, their website is available in both Polish and Spanish, a valuable asset considering the area’s substantial Spanish-speaking population (up to 20% of the local demographic).

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    While achieving fluency in every language spoken within your community may not be feasible, consider adapting your website and patient materials to include translations in commonly spoken languages. As Dr. Fruchtman’s experience confirms, even a simple greeting in a patient’s native language can create a bond with patients or, at the very least, prompt a genuine surprised smile.

    optometry practice growth

    The problem. To establish expertise in specialized services, Dr. William Fruchtman has been committed to effectively managing dry eye disease and macular degeneration. Not so long ago, the practice implemented Equinox Low-Level Light Therapy (LLLT). This advanced dry eye treatment utilizes LED lights to warm the eyelids gently, promoting meibomian gland function and oil release. With dry eye management addressed, Dr. Fruchtman sought an additional tool to both strengthen his decision-making when managing patients with other pathologies, particularly macular degeneration, and increase his optometry practice growth.

    The solution. After researching Altris AI, an Artificial Intelligence platform for OCT scan analysis, Dr. Fruchtman was positive that he wanted to try the platform. Following introductory meetings and a quick onboarding with the Altris team, he started a two-week trial. After personally testing the platform, Dr. Fruchtman decided it was an invaluable addition to his practice.

    optometry practice growth

    Integrating Altris AI into the practice has notably enhanced Dr. Fruchtman’s confidence and precision in diagnosing and managing eye care disorders. The practice has also gained a significant competitive advantage, as the platform can routinely perform Glaucoma Risk Analysis on existing OCT scans, offering additional value to patients. 

    Thanks to the color-coded and labeled OCTs, optometry facilitates patient education and enables practitioners and patients to monitor the progression or treatment results more effectively. 

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    How to grow an optometry practice: more cases from optometry owners

    Optometrists undergo years of education, training, practice, and continuous learning – understandably, it is hard to see additional time or resources to pursue business education. 

    Many practitioners experience stress, balancing patient care demands with the realities of running a profitable business. This feeling can intensify when attending countless conferences and webinars highlighting thousands of ways to make business more efficient. While they offer valuable advice, it’s sometimes helpful to remember simple points of how successful optometry practice growth will look: attracting new patients, retaining existing ones, and ensuring a smooth and efficient workflow. These (even though overly simplified) points allow you to focus on the most critical details.

    But before diving into ways of optometry practice growth, remember that the first step is a realistic assessment of your current situation. 

    While you’re likely aware of some issues, feedback from your team and patients can provide insights, and sometimes even immediate solutions, for areas of improvement. 

    Even though we cannot directly assist in assessing your specific practice, as you know it best, below we offer some key, proven strategies for growing your business.

    Optometry practice growth: expanding your patient base

    • Dry Eye Specialization

    One effective strategy for optometry practice growth is to expand the scope of services to include the diagnosis and management of ocular diseases. For example, dry eye disease (DED) affects ∼344 million people worldwide and over 20 million in the United States alone, yet many remain undiagnosed and untreated. This presents a significant opportunity to care for a large and often underserved patient population. By developing expertise in DED and offering specialized treatments, you can not only attract new patients but also contribute to improving the quality of life for those suffering from this chronic condition.

    how to grow an optometry practice

    There are numerous approaches to managing DED effectively. As mentioned, Dr. William C. Fruchtman’s practice utilizes Equinox Low-Level Light Therapy (LLLT). 

    Dr. Shane Swatts, O.D., owner of Eastern Virginia Eye Associates, employs AI software to enhance DED diagnostics, conduct more comprehensive analyses, and keep detailed patient medical histories. This technology upgrades pre-and post-operative care, saving time without compromising accuracy.

    how to grow an optometry practice

    • Aesthetic Optometry

    Dr. Janelle Davison identified an opportunity for optometry practice growth by addressing patient needs while generating additional revenue by incorporating aesthetic optometry services into her practice. Within a single quarter, her practice generated $14,000 in revenue from aesthetic product sales alone. 

    how to grow an optometry practice

    Source

    Dr. Davison also collaborates with a licensed aesthetician who operates within the practice on a contract basis, sharing the revenue generated from aesthetic services.

    improve efficiency in optometry office

    • Glaucoma Management

    Dr. James Deom, O.D., M.P.H., an optometrist from Pennsylvania, implemented a successful strategy for optometry practice growth based on attracting glaucoma patients, significantly increasing glaucoma-related revenue. He initiated internal marketing efforts by inquiring about patients’ family history of glaucoma and informing them about the practice’s newest technology for the early detection of vision loss.

    improve efficiency in optometry office

    Practices specializing in glaucoma management can significantly benefit from incorporating advanced software solutions to complement their existing diagnostic hardware. For instance, integrating Altris AI, AI for OCT,  into their OCT analysis workflow enables not only automated screening of 70+ pathologies and biomarkers but includes assessing retinal nerve fiber layer (RNFL) asymmetry for glaucoma risk evaluation.

    • Patient-Centered Care

    Offering diverse channels for patient interaction can broaden your practice’s reach and improve the patient experience. Dr. Melissa Richard, O.D., sought to provide patients with a preview of frame options before their appointments. To achieve this, she integrated Optify technology into her practice, a solution she discovered during a Vision Source Exchange lecture. This technology creates a virtual showroom where patients can explore and select their preferred frames in advance, streamlining the in-office experience.

    optometry practice growth

    Patient education is also key to patient-centered care and personalization, which not only empowers individuals and improves their outcomes but also fosters optometry practice growth. Those who understand their eye health are more likely to adhere to recommendations. 

    A study demonstrates that 94% desire educational content, but a third don’t receive it. 

    Providing color-coded OCT reports with pathologies, biomarkers, and pathology progression tracking not only satisfies this need but also elevates your practice above competitors.

    improve efficiency in optometry office

    Improve efficiency in the optometry office through strategic partnerships & team building

    When optometrists consider further career development, they may seek additional support to achieve their goals. Dr. Linda Enciso, O.D., found such support when her practice joined the AEG Vision family in 2019. The transition brought numerous positive changes, boosting patient care and fostering growth opportunities for team members.

    Although Dr. Enciso had already been operating her practice for 13 years and had implemented electronic health records (EHR) systems and third-party software to improve patient communication and boost optometry practice growth, her goal was to continue these advancements and expand the scope of practice.  Joining AEG Vision allowed her to transition to the training team, access continuing education opportunities to stay informed about advancements in optometry and healthcare, collaborate with other healthcare providers and cross-functional teams to enhance comprehensive patient care.

    optometry practice growth

    While the phrase “team building” might evoke images of complicated activities and extensive effort, fostering a strong team can be achieved through simple, engaging initiatives. Consider the inspiring example of Dr. Jonathan Cargo, O.D.  

    Dr. Cargo recognizes the value of personal development through reading but finds it challenging to share his insights with his team effectively. Inspired by his wife’s long-standing book club, he initiated an office book club to encourage team connection and shared learning to improve efficiency in the optometry office.

    The book club operates with team members suggesting relevant titles and collectively reading chapters over a month, dedicating time during team meetings for discussions. Dr. Cargo highlights the recent success of reading “Crucial Conversations,” a selection prompted by team members’ desire to deepen their communication skills, particularly in navigating challenging discussions with colleagues, patients, and even family members.  The shared reading experience gave a better understanding of effective communication strategies and empowered the team to navigate difficult conversations.

    improve efficiency in optometry office

     

    Summing up

    When regarding optometry practice growth, consider the time, effort, and resources you are prepared to invest. To expand your patient base, explore the addition of new services.

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    To optimize costs and efficiency and gain a competitive edge, investigate the possibility of implementing AI in your practice – it can be a second-opinion tool, or you can read here how practitioners use it for marketing, creating educational materials, and more. To encourage staff retention and nurture a positive work environment, prioritize team-building activities; even seemingly simple initiatives can produce significant benefits.

     

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  • OCT Scan Normal Eye vs 8 Most Common Pathologies

    normal abnormal oct scan
    Maria Znamenska
    31.10.2024
    14 min read

    OCT Scan Normal Eye vs. 8 Most Common Pathologies

    Differentiating between an OCT scan of a normal eye vs. a pathological one is a practical skill gained after years and years of practice. However, educating yourself on the basic differences will speed up the process. Understanding the “why” and “how” behind any changes on the OCT scan, compared to a normal macula OCT, will speed up your learning curve and deepen your expertise as a retinal expert.

    The article’s first part focuses on key OCT features and their meaning as a structural change for retinal architecture. The second part discusses the most recognizable OCT features of eight common pathologies.

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    OCT Scan: Normal Eye

    When evaluating an OCT scan, the most logical step is to understand how a normal macula OCT should look. The most telling feature across all scans is the contrast between light and dark areas. Typically, the nerve fiber layer and the underlying ganglion cell layer appear brighter than the densely packed nuclear layers. This is followed by the inner plexiform layer interface, which presents as a bright, hyperreflective area.

    The inner nuclear layer, composed of densely packed nuclei, appears dark. This is followed by the outer plexiform layer, the outer nuclear layer, and Henle’s layer. The external limiting membrane, an important landmark for assessing retinal health, is also visible. The ellipsoid zone (EZ) is another bright layer, while the interdigitation zone may not always be distinguishable from the underlying RPE layer, even in healthy eyes. Finally, the RPE and inner choroid appear hyperreflective.

    normal macula oct

    Structure

    The ELM and EZ are critical structures to assess. In a normal macula OCT, the distance between the EZ and ELM is shorter than between the EZ and the RPE. The apparent “elevation” of the EZ in the foveal center results from the elongated outer segments of the foveal cones.

    It’s important to remember that not all retinal structures are readily visible on a normal macula OCT. For example, Henle’s fiber layer is more easily distinguished in the presence of retinal pathology, such as swelling or thinning. Similarly, Bruch’s membrane is usually not visualized unless there is a separation between the RPE and Bruch’s membrane, often indicative of disease.

    Thickness

    Choroidal thickness is another key factor in OCT assessment. A general rule of thumb is that the choroid (between the RPE and the outer choroidal boundary) is approximately as thick as the retina. Thinning of the choroid may be observed in myopic or older patients, while marked choroidal thickening can raise suspicion for diseases like central serous retinopathy.  

    The OCT scan also provides information about laterality. The nerve fiber layer is characteristically thicker near the optic nerve head.  Conversely, if the nerve fiber layer is not visualized in its expected location on an otherwise OCT normal scan, it could signal significant nerve fiber layer loss, potentially due to glaucoma or other optic neuropathies.

    Reflectivity

    Specific OCT terminology helps describe scans and differentiate normal findings from pathology.

    Two fundamental concepts in OCT interpretation are hyporeflectivity and hyperreflectivity, which form the basis for understanding the structural composition of the retina as visualized in an OCT scan.

    Hyporeflectivity refers to the increased light transmission capacity of a structure. The OCT scanning laser beam passes through hyporeflective structures with minimal reflection. The quintessential example of a hyporeflective structure is the vitreous humor. It appears as a dark area in the uppermost portion of a normal OCT scan, situated above the retina.

    But hyporeflectivity can also be pathological, deviating from the patterns observed in a normal macula OCT; in the retina, it manifests in three primary ways.

    Like the vitreous, subretinal fluid exhibits high light transmission and appears black on OCT. A uniformly black region suggests the fluid lacks cellular debris or other inclusions.

    normal abnormal oct scan

    Subretinal fluid on OCT

    Fluid can also accumulate within the retinal layers, for example, between the layers of the neuroepithelium. This intraretinal fluid also appears hyporeflective on OCT.

    oct scan normal eye

    Intraretinal fluid on OCT

    Following a degenerative process within the retina, a cavity or void may form where retinal tissue has been lost. These degenerative cavities lack the cellular components necessary to reflect light and thus appear as dark spaces on OCT.  It’s important to differentiate these cavities from cystic spaces, which may have distinct clinical implications.

    One example is outer retinal tubulations. While associated with various diseases, outer retinal tubulations (ORTs) generally indicate outer retinal degeneration and atrophy.

    normal macula oct

    Outer retinal tubulations on OCT

    Hyperreflectivity, unlike hyporeflectivity, indicates structures with high light reflectance. On the grayscale spectrum of an OCT image, hyperreflective structures appear progressively whiter. 

    The retinal pigment epithelium (RPE) complex and Bruch’s membrane are considered the most hyperreflective structures in a normal macula OCT.

    Pathological processes can introduce new hyperreflective elements within the retina, aiding in differentiating normal and abnormal OCT scans. A typical example is hard exudates, frequently observed in diabetic retinopathy. These lipid-rich deposits are extremely dense, causing them to appear bright white on OCT due to the complete reflection of incident light. Furthermore, this high density leads to a shadowing effect beneath the deposits, caused by strong backscattering of the OCT signal.

    normal abnormal oct scan

    Hard exudates and shadowing on OCT

    Epiretinal membranes (ERMs) – a thin membrane or layer of scar tissue that forms over the retina – are also hyperreflective. It is composed of dense connective tissue with high light-reflecting properties and appears white on OCT scans.

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    Integrity

    Beyond hypo- and hyperreflectivity, OCT interpretation involves assessing the structural integrity of retinal layers. For instance, in an OCT scan of a normal eye, Bruch’s membrane appears as a thin, continuous line underlying the retinal pigment epithelium (RPE). The RPE is a monolayer of cells, ideally presenting with a smooth and uniform optical density. However, some pathologies, particularly early stages of age-related macular degeneration (AMD), may show unevenness or integrity loss in the RPE and Bruch’s membrane complex. 

    Disruption of the ellipsoid zone (EZ) is a particularly concerning finding on OCT, often indicating photoreceptor damage. Significant disruption of the EZ in the central macula is a strong biomarker for adverse visual outcomes.

    The closer the loss of integrity extends toward the foveal center, the poorer the visual prognosis tends to be.

    oct scan normal eye

    Ellipsoid zone disruption on OCT

    OCT also plays a crucial role in visualizing and characterizing breaks in the structural integrity of the retina. These breaks, commonly referred to as retinal tears or holes, can be classified as full-thickness or partial-thickness, depending on the extent of retinal involvement.

    Full-thickness breaks completely separate all retinal layers, while partial-thickness breaks involve only some retinal layers. OCT allows for precise delineation of the layers involved and the overall morphology of the break.

    Retinal holes can also be categorized by their location. Macular holes, as the name suggests, involve the central retina and can lead to significant central vision loss and require prompt attention.

    normal macula oct

    Lamellar macular hole on OCT

    Non-macular holes occur outside the central macular region, often in the peripheral retina. While they may not cause immediate central vision disturbances, they can still lead to serious complications, such as retinal detachment, if left untreated.

    Definition

    The blurring of retinal structures, or loss of definition, is another key OCT concept. This loss of the retina’s normal layered organization, seen in diseases like AMD, manifests as indistinct layers merging into a homogenous mass.

    normal macula oct

    Disorganisation of retinal inner layers on OCT

    Hypertransmission in OCT refers to enhanced signal penetration due to reduced blockage of the OCT light signal. This phenomenon is frequently observed in geographic atrophy, a late stage of AMD characterized by the atrophy of the retinal pigment epithelium, choriocapillaris, and photoreceptors.

    normal abnormal oct scanHypertransmission on OCT

    In a normal macula OCT, a signal is attenuated as it traverses the various retinal layers, with a portion of the signal being reflected to the detector. However, in geographic atrophy (GA), the loss of RPE and other retinal structures reduces this attenuation, allowing the OCT signal to penetrate deeper into the choroid. This increased penetration results in a stronger signal return from the choroidal layers, creating essentially a “corridor” of enhanced signal penetration through the atrophic areas of the retina.  This deep penetration and strong signal return, unfortunately, indicate significant retinal damage and are associated with a poor visual prognosis.

    Displacement

    Another term used to describe OCT scan results is elevation. It refers to the upward displacement of retinal structures from their normal anatomical position. In the context of age-related macular degeneration (AMD), elevation is frequently associated with the presence of drusen.

    Drusen are extracellular deposits that accumulate between the retinal pigment epithelium (RPE) and Bruch’s membrane. They are a hallmark of AMD and can vary in size, shape, and composition.  Drusen are typically categorized as hard, soft, or confluent based on their ophthalmoscopic appearance.

    oct scan normal eye

    Hard and soft drusen on OCT

    In contrast to elevation, depression in OCT describes the inward displacement or concavity of retinal structures.  This can be a manifestation of various pathological processes, with a prominent example of degenerative myopia.

    oct scan normal eye

    Degenerative myopia on OCT

     

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    OCT scan: normal eye transformation through pathologies

    Age-related macular degeneration (AMD)

    AMD is an acquired degenerative macular disease usually affecting individuals over the age of 55 years. It is characterized by pathologic alterations of the outer retina, retinal pigment epithelium (RPE), Bruch’s membrane, and choriocapillaris complex, including drusen formation and pigmentary changes.

    AMD is a progressive disease, and in advanced stages, central geographic atrophy and neovascularization, may develop and reduce vision. OCT plays a critical role in distinguishing between the different stages and forms of AMD, particularly when compared to the features of an OCT normal scan.

    Wet AMD

    normal abnormal oct scan

    Neovascular or “wet” age-related macular degeneration (nAMD) arises from the aberrant growth of choroidal vessels that penetrate Bruch’s membrane and invade the subretinal space. These abnormal vessels leak fluid and blood, disrupting the retinal architecture and causing vision loss. 

    Several key OCT features can signal the presence and activity of nAMD in comparison to a normal OCT scan:

    • Fluid Accumulation: The presence and location of fluid are hallmarks of nAMD (hence the term ‘wet AMD’). Intraretinal fluid, appearing within the retinal layers, often signifies more severe disease and a poorer visual prognosis than subretinal fluid, which accumulates beneath the retina.
    • RPE Detachment: Serous PED appears as a dome-shaped elevation of the RPE due to fluid accumulation beneath it. PEDs often accompany nAMD and can vary in size and shape.
    • Disruption of Retinal Layers: nAMD can disrupt the normal retinal architecture, particularly the photoreceptor layer. Damage to the ellipsoid zone (EZ) and external limiting membrane (ELM) is visible on OCT and correlates with visual impairment.
    • Hyperreflective Foci: Hyperreflective dots (HRDs) are small, bright spots scattered throughout the retina.
    • Subretinal Hyperreflective Material (SHRM): Appears as a hyperreflective band between the retina and RPE. Its composition varies but may include fluid, fibrin, blood, and neovascular tissue; it can be associated with poorer visual outcomes.
    • RPE Tears: These are disruptions in the RPE monolayer, often occurring in areas of PED. RPE tears can lead to significant vision loss and are an important complication of nAMD.
    • Choroidal Changes: nAMD can also affect the choroid, the vascular layer beneath the RPE.

    Dry AMD

    normal abnormal oct scan

    In its early stages, Dry AMD is characterized by drusen and pigmentary abnormalities resulting from alterations in the retinal pigment epithelium (RPE). Later, it can progress to geographic atrophy (GA) or outer retinal atrophy.

    The three classic findings in Dry AMD are drusen, pigmentary changes, and geographic atrophy.

    Drusen are classified as:

    • small (<65 um), 
    • medium (65 – 124 um), 
    • or large (>125 um). 

    While both drusen and pigmentary changes can appear as yellowish deposits in the retina, pigmentary changes are often more varied in color (ranging from yellow to brown or black) and less defined in shape than the generally circular drusen.

    Geographic atrophy typically begins in the paracentral macula, often surrounding the fovea in a horseshoe pattern. It can eventually involve the fovea itself, leading to severe vision loss.

    Diabetic Retinopaty (DR)

    normal macula oct

    Diabetic retinopathy (DR), a leading cause of vision loss in working-age populations, is characterized by retinal vascular abnormalities. It progresses from non-proliferative DR (NPDR), marked by vascular leakage and capillary occlusion, to proliferative DR (PDR), where neovascularization can lead to severe vision impairment through vitreous hemorrhage or retinal detachment.

    OCT can aid in identifying the earliest sign of DR: microaneurysms. They appear as small, distinct, oval-shaped, hyperreflective, walled structures associated with microvascular damage. Specifically, the structural weakness of the vessel wall of MAs causes fluid leakage, resulting in edema.

    oct scan normal eye

    Another consequence of microaneurysm formation is the progression to intraretinal hemorrhages (IRH), often called ‘dot-blot’ hemorrhages. These appear as hyperreflective foci on OCT cross-sections, with varying degrees of opacification.

    Diabetic macular edema (DME) can occur at any stage of the disease and is the most common cause of vision loss in those with diabetes. It results from a blood-retinal barrier breakdown, leading to fluid leakage and retinal thickening.

    Retinal vein occlusions

    normal macula oct

    Retinal vein occlusions (RVOs) are blockages of the retinal veins responsible for draining blood from the retina. These blockages can affect either the central retinal vein (CRVO) or one of its branches (BRVO). RVOs are more prevalent in older individuals and those with underlying vascular conditions such as high blood pressure, high cholesterol, a history of heart attack or stroke, diabetes, or glaucoma. The primary vision-threatening complications of RVO are macular edema, which involves fluid accumulation in the central retina, and retinal ischemia, which results from insufficient blood flow to the retina.

    While both Central Retinal Vein Occlusion (CRVO) and Branch Retinal Vein Occlusion (BRVO) involve blockage of a retinal vein, the underlying cause and location of the blockage differ.

    CRVO occurs when a thrombus (blood clot) blocks the central retinal vein near the lamina cribrosa, where the optic nerve exits the eye.

    In contrast, BRVO typically occurs at an arteriovenous crossing point, where a retinal artery and vein intersect. Atherosclerosis (hardening of the arteries) can compress the vein at this crossing point, leading to thrombus formation and occlusion.

    In CRVO, the retina often exhibits extensive intraretinal hemorrhages, dilated and tortuous veins, and cotton-wool spots. This constellation of findings is classically described as a “blood and thunder” appearance. In BRVO, the signs are typically localized to the area of the retina drained by the affected vein. Macular edema, characterized by retinal thickening and cystoid spaces within the retina, is a common finding in CRVO and BRVO and can significantly contribute to vision loss.

    Central serous retinopathy

    normal abnormal oct scan

    Central serous chorioretinopathy (CSCR) is a common retinal disorder that causes visual impairment and altered visual function. It is classified as a pachychoroid disease, including conditions like polypoidal choroidal vasculopathy and pachychoroid neovasculopathy. 

    OCT imaging in CSCR often reveals a thicker-than-average choroid.

    This diagnostic is particularly useful in cases where clinical examination findings are inconclusive, distinguishing subtle differences between normal and abnormal OCT scans in terms of structural changes, such as small pigment epithelial detachments (PEDs) and hyperreflective subretinal fluid, that may not readily appear on clinical exams.

    Furthermore, OCT is valuable for monitoring disease progression and resolution in chronic CSCR cases. A distinguishing feature that can also be seen in CSR is the appearance of the retinal pigment epithelium: the RPE line typically appears straight in non-affected areas, while it can appear wavy or irregular in areas with CSCR.

    Epiretinal membrane (Epiretinal fibrosis) 

    oct scan normal eye

    Epiretinal fibrosis (epiretinal membrane/macular pucker) is a common condition affecting the central retina, specifically the macula. It is characterized by a semi-translucent, avascular membrane that forms on the retinal surface, overlying the internal limiting membrane (ILM), which is absent on a normal macula OCT.

    OCT plays a crucial role in assessing the severity of ERMs, revealing the extent of macular distortion and the involvement of retinal layers.

    OCT findings in ERMs are used to stage the severity of the membrane, ranging:

    • Stage 1: ERMs are mild and thin. Foveal depression is present.
    • Stage 2: ERMs with widening the outer nuclear layer and losing the foveal depression.
    • Stage 3: ERMs with continuous ectopic inner foveal layers crossing the entire foveal area.
    • Stage 4: ERMs are thick with continuous ectopic inner foveal and disrupted retinal layers.

    Retinal detachment

    normal abnormal OCT scan

    Retinal detachment is an important cause of decreased visual acuity and blindness, a common ocular emergency often requiring urgent treatment.

    It occurs when subretinal fluid accumulates between the neurosensory retina and the retinal pigment epithelium through three mechanisms:

    • Rhegmatogenous: a break in the retina allowing liquified vitreous to enter the subretinal space directly.
    • Tractional: proliferative membranes on the surface of the retina or vitreous pull on the neurosensory retina, causing a physical separation between the neurosensory retina and retinal pigment epithelium
    • Exudative: accumulation of subretinal fluid due to inflammatory mediators or exudation of fluid from a mass lesion/insufficient RPE function

    OCT helps identify foveal status and diagnose tractional or exudative retinal detachments, aiding in treatment planning.

    Macular hole

    normal macula oct

    Macular holes are full-thickness defects of retinal tissue involving the anatomic fovea and primarily the foveola of the eye. They are thought to form due to anterior-posterior forces, tangential forces and weakening in the retinal architecture that result in openings in the macular center. 

    The International Vitreomacular Traction Study (IVTS) Group formed a classification scheme of vitreomacular traction and macular holes based on OCT findings:

    • Vitreomacular adhesion (VMA): No distortion of the foveal contour; size of attachment area between hyaloid and retina defined as focal if </= 1500 microns and broad if >1500 microns
    • Vitreomacular traction (VMT): Distortion of foveal contour present or intraretinal structural changes in the absence of a full-thickness macular hole; size of attachment area between hyaloid and retina defined as focal if </= 1500 microns and broad if >1500 microns.
    • Full-thickness macular hole (FTMH): Full-thickness defect from the internal limiting membrane to the retinal pigment epithelium. Described 3 factors: 1) Size – horizontal diameter at narrowest point: small (≤ 250 μm), medium (250-400 μm), large (> 400 μm); 2) Cause –  primary or secondary; 3) Presence of absence of VMT.

    Glaucoma

    oct scan normal eye

    Glaucoma is a progressive optic neuropathy that is multifactorial and degenerative. It is characterized by the death of retinal ganglion cells (RGCs) and their axons, leading to the characteristic optic disc and retinal nerve fiber layer (RNFL) structural changes and associated vision loss. One of the most effective ways to get information about nerve states is OCT.

    The Glaucoma OCT test provides valuable information about ganglion cells: damage to the ganglion cells or their processes leads to thinning across respective layers, which we can measure as the thickness of the ganglion cell complex. 

    Key things to focus on when working with OCT for glaucoma detection:

    • Look for thinning of the pRNFL, particularly in the inferior and superior quadrants, asymmetrical thinning between a patient’s eyes
    • Assess the thickness of the ganglion cell-inner plexiform layer, macular RNFL, and the overall ganglion cell complex. 
    • Monitoring: Seek significant decreases over time in pRNFL thickness (≥5 μm globally, ≥7-8 μm in specific sectors) or in average GCIPL thickness (>4μm).

    AI-powered OCT interpretation tools, such as Altris AI, AI for OCT, can further assist clinicians by providing automated calculations of RNFL thinning in the upper and lower hemispheres and the asymmetry levels between them.

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    Summing up

    OCT has revolutionized ophthalmology, bringing a wealth of new details and challenges. The human eye can easily miss subtle abnormalities on complex scans, making accurate interpretation critical. While experience is essential, relying solely on  “learning by doing” poses risks. 

    AI-powered OCT interpretation software bridges this gap, offering a safety net during the learning curve and beyond. AI-powered second opinion on OCT scans enhances diagnostic accuracy, empowers clinicians, and allows them to spend more time for a meaningful connection with patients.

  • Optometry Practice Growth: Business Cases

    how to grow an optometry practice
    Altris Inc.
    03.10.2024
    8 min read

    Optometry practice growth: business cases

    The client. Dr. William C. Fruchtman’s Optometry Practice, owned and operated by Dr. William C. Fruchtman, O.D., is located in East Rutherford, New Jersey, an inner-ring suburb of New York City. With over 30 years of service to the community, the practice provides comprehensive eye care, including regular eye examinations, contact lenses, and glasses prescriptions. 

    Dr. William Fruchtman’s practice continually seeks opportunities to add value to its services. He is cultivating his expertise in dry eye disease and macular degeneration, implementing advanced technologies, and using another effective strategy to expand his patient base – communicating with patients in their preferred language. Knowing that clear communication is vital to good care, Dr. William C. Fruchtman’s team includes members who speak Spanish and Polish. As such, their website is available in both Polish and Spanish, a valuable asset considering the area’s substantial Spanish-speaking population (up to 20% of the local demographic).

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    While achieving fluency in every language spoken within your community may not be feasible, consider adapting your website and patient materials to include translations in commonly spoken languages. As Dr. Fruchtman’s experience confirms, even a simple greeting in a patient’s native language can create a bond with patients or, at the very least, prompt a genuine surprised smile.

    optometry practice growth

    The problem. To establish expertise in specialized services, Dr. William Fruchtman has been committed to effectively managing dry eye disease and macular degeneration. Not so long ago, the practice implemented Equinox Low-Level Light Therapy (LLLT). This advanced dry eye treatment utilizes LED lights to warm the eyelids gently, promoting meibomian gland function and oil release. With dry eye management addressed, Dr. Fruchtman sought an additional tool to both strengthen his decision-making when managing patients with other pathologies, particularly macular degeneration, and increase his optometry practice growth.

    The solution. After researching Altris AI, an Artificial Intelligence platform for OCT scan analysis, Dr. Fruchtman was positive that he wanted to try the platform. Following introductory meetings and a quick onboarding with the Altris team, he started a two-week trial. After personally testing the platform, Dr. Fruchtman decided it was an invaluable addition to his practice.

    optometry practice growth

    Integrating Altris AI into the practice has notably enhanced Dr. Fruchtman’s confidence and precision in diagnosing and managing eye care disorders. The practice has also gained a significant competitive advantage, as the platform can routinely perform Glaucoma Risk Analysis on existing OCT scans, offering additional value to patients. 

    Thanks to the color-coded and labeled OCTs, optometry facilitates patient education and enables practitioners and patients to monitor the progression or treatment results more effectively. 

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    How to grow an optometry practice: more cases from optometry owners

    Optometrists undergo years of education, training, practice, and continuous learning – understandably, it is hard to see additional time or resources to pursue business education. 

    Many practitioners experience stress, balancing patient care demands with the realities of running a profitable business. This feeling can intensify when attending countless conferences and webinars highlighting thousands of ways to make business more efficient. While they offer valuable advice, it’s sometimes helpful to remember simple points of how successful optometry practice growth will look: attracting new patients, retaining existing ones, and ensuring a smooth and efficient workflow. These (even though overly simplified) points allow you to focus on the most critical details.

    But before diving into ways of optometry practice growth, remember that the first step is a realistic assessment of your current situation. 

    While you’re likely aware of some issues, feedback from your team and patients can provide insights, and sometimes even immediate solutions, for areas of improvement. 

    Even though we cannot directly assist in assessing your specific practice, as you know it best, below we offer some key, proven strategies for growing your business.

    Optometry practice growth: expanding your patient base

    • Dry Eye Specialization

    One effective strategy for optometry practice growth is to expand the scope of services to include the diagnosis and management of ocular diseases. For example, dry eye disease (DED) affects ∼344 million people worldwide and over 20 million in the United States alone, yet many remain undiagnosed and untreated. This presents a significant opportunity to care for a large and often underserved patient population. By developing expertise in DED and offering specialized treatments, you can not only attract new patients but also contribute to improving the quality of life for those suffering from this chronic condition.

    how to grow an optometry practice

    There are numerous approaches to managing DED effectively. As mentioned, Dr. William C. Fruchtman’s practice utilizes Equinox Low-Level Light Therapy (LLLT). 

    Dr. Shane Swatts, O.D., owner of Eastern Virginia Eye Associates, employs AI software to enhance DED diagnostics, conduct more comprehensive analyses, and keep detailed patient medical histories. This technology upgrades pre-and post-operative care, saving time without compromising accuracy.

    how to grow an optometry practice

    • Aesthetic Optometry

    Dr. Janelle Davison identified an opportunity for optometry practice growth by addressing patient needs while generating additional revenue by incorporating aesthetic optometry services into her practice. Within a single quarter, her practice generated $14,000 in revenue from aesthetic product sales alone. 

    how to grow an optometry practice

    Source

    Dr. Davison also collaborates with a licensed aesthetician who operates within the practice on a contract basis, sharing the revenue generated from aesthetic services.

    improve efficiency in optometry office

    • Glaucoma Management

    Dr. James Deom, O.D., M.P.H., an optometrist from Pennsylvania, implemented a successful strategy for optometry practice growth based on attracting glaucoma patients, significantly increasing glaucoma-related revenue. He initiated internal marketing efforts by inquiring about patients’ family history of glaucoma and informing them about the practice’s newest technology for the early detection of vision loss.

    improve efficiency in optometry office

    Practices specializing in glaucoma management can significantly benefit from incorporating advanced software solutions to complement their existing diagnostic hardware. For instance, integrating Altris AI, AI for OCT,  into their OCT analysis workflow enables not only automated screening of 70+ pathologies and biomarkers but includes assessing retinal nerve fiber layer (RNFL) asymmetry for glaucoma risk evaluation.

    • Patient-Centered Care

    Offering diverse channels for patient interaction can broaden your practice’s reach and improve the patient experience. Dr. Melissa Richard, O.D., sought to provide patients with a preview of frame options before their appointments. To achieve this, she integrated Optify technology into her practice, a solution she discovered during a Vision Source Exchange lecture. This technology creates a virtual showroom where patients can explore and select their preferred frames in advance, streamlining the in-office experience.

    optometry practice growth

    Patient education is also key to patient-centered care and personalization, which not only empowers individuals and improves their outcomes but also fosters optometry practice growth. Those who understand their eye health are more likely to adhere to recommendations. 

    A study demonstrates that 94% desire educational content, but a third don’t receive it. 

    Providing color-coded OCT reports with pathologies, biomarkers, and pathology progression tracking not only satisfies this need but also elevates your practice above competitors.

    improve efficiency in optometry office

    Improve efficiency in the optometry office through strategic partnerships & team building

    When optometrists consider further career development, they may seek additional support to achieve their goals. Dr. Linda Enciso, O.D., found such support when her practice joined the AEG Vision family in 2019. The transition brought numerous positive changes, boosting patient care and fostering growth opportunities for team members.

    Although Dr. Enciso had already been operating her practice for 13 years and had implemented electronic health records (EHR) systems and third-party software to improve patient communication and boost optometry practice growth, her goal was to continue these advancements and expand the scope of practice.  Joining AEG Vision allowed her to transition to the training team, access continuing education opportunities to stay informed about advancements in optometry and healthcare, collaborate with other healthcare providers and cross-functional teams to enhance comprehensive patient care.

    optometry practice growth

    While the phrase “team building” might evoke images of complicated activities and extensive effort, fostering a strong team can be achieved through simple, engaging initiatives. Consider the inspiring example of Dr. Jonathan Cargo, O.D.  

    Dr. Cargo recognizes the value of personal development through reading but finds it challenging to share his insights with his team effectively. Inspired by his wife’s long-standing book club, he initiated an office book club to encourage team connection and shared learning to improve efficiency in the optometry office.

    The book club operates with team members suggesting relevant titles and collectively reading chapters over a month, dedicating time during team meetings for discussions. Dr. Cargo highlights the recent success of reading “Crucial Conversations,” a selection prompted by team members’ desire to deepen their communication skills, particularly in navigating challenging discussions with colleagues, patients, and even family members.  The shared reading experience gave a better understanding of effective communication strategies and empowered the team to navigate difficult conversations.

    improve efficiency in optometry office

     

    Summing up

    When regarding optometry practice growth, consider the time, effort, and resources you are prepared to invest. To expand your patient base, explore the addition of new services.

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    To optimize costs and efficiency and gain a competitive edge, investigate the possibility of implementing AI in your practice – it can be a second-opinion tool, or you can read here how practitioners use it for marketing, creating educational materials, and more. To encourage staff retention and nurture a positive work environment, prioritize team-building activities; even seemingly simple initiatives can produce significant benefits.

     

  • Optometry Trends in Action: 12 Real-World Success Stories

    Maria Znamenska
    17.09.2024
    8 min read

    Optometry Trends in Action: 12 Real-World Success Stories

    Optometry trends explained: showcasing real-world optometry practice owners who are adapting to the shift in patient needs, successfully implementing solutions to automate routine and laborious tasks, using AI to combat staff shortages, creating their own brand mascots, and more.

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    Optometry trends for the patient journey: digital communication

    Online shopping, global deliveries, and instant brand replies through messengers have dramatically shifted client expectations and behaviors. The ‘convenience economy’ isn’t slowing down, pushing businesses to adopt technology for more streamlined consumer experiences. 

    What does this mean for your practice? Your patients now expect fast and efficient communication across all touchpoints –  from online scheduling to contactless payments. Transforming your practice to meet these demands ensures satisfied patients and contributes to long-term success, as any optometry practice thrives on the individual experiences of the patients it provides.

    46% of optometrists reported that patient expectations have risen since the pandemic.

    Practices can optimize their workflows in various ways, but generally, the goal is to automate routine administrative tasks, free up staff, and reduce patient waiting time. Digital safety forms and document management systems eliminate physical paperwork, while online proofing and approval systems speed up document processing.

    Optometry trends

    Dr. Justin Bazan, owner and optometrist at Park Slope Eye, New York, has taken this even further by eliminating phone calls at his office entirely and is pleased with the results. This solution was based on several months of analyzing data related to phone calls, including time spent on calls and the frequency of missed calls. The team recognized that while the staff could simultaneously chat with multiple patients, they could only handle one phone call at a time.

    trends in optometry

    Chad Fleming, OD, Owner and OD at Wichita Optometry, Kansas, also identified the need for an enhanced digital presence to prioritize patient convenience. His practice faced the challenge of managing a high volume of phone calls and text messages, requiring either additional staff hiring without an immediate increase in revenue or a strategic reallocation of existing personnel.

    optometry industry trends

    Dr. Fleming optimized the patient experience by setting up automated checkouts at some of his practice locations. This approach enabled him to reassign three front desk employees to the digital communications team. While the transition required patient education to familiarize them with the virtual check-in process on iPads, it did not result in patient attrition.

    optometry industry trends

    Source

    Brianna Rhue, OD, Owner and Optometrist of West Broward Eyecare Associates, Florida, agrees that the traditional approach of answering calls and checking emails once a day differs from today’s patient expectations. She advocates step-by-step optimizations throughout the patient journey to eliminate unnecessary wait times and increase productivity.

    trends in optometry

    Upgrading to a more advanced EHR system is one of the significant opportunities to streamline practice operations, save practitioners time, money, and stress, and align with optometry industry trends. Unfortunately, once hailed as revolutionary, some widely adopted EHR solutions are now criticized for their burdensome workflows and counterintuitive interfaces. This has led some practitioners to describe their interaction with systems as “death by a thousand clicks.”

    By leveraging up-to-date EHR features like customizable patient encounter templates, integrated imaging and diagnostic tools, and patient outcome tracking, eye care professionals can shift their focus from paperwork to patient care.

    Another of optometry trends gaining momentum among optometry practice owners is offering flexible payment options. This reflects not only the growing demand for convenience but also the financial constraints of patients navigating the current economy that is heading to a recession.

    Dr. Rhue encourages practices to adopt mobile payment solutions that enable patients to pay electronically using platforms like Apple Pay, Venmo, or PayPal at the point of service. For balances due after the visit, the ability to send secure payment links via text message can greatly enhance the collection process.

    optometry trends

    Source

    Furthermore, providing patient financing options empowers patients to choose how and when they pay. This offers additional convenience for both parties and eliminates friction by allowing patients to spread the cost of their care over time rather than requiring full payment upfront.

    If you are still determining which technologies of these optometry industry trends your patients will be eager to adopt, consider the approach taken by Scott Jens, OD, the owner of Isthmus Eye Care, Wisconsin. Dr. Jens has successfully implemented post-examination surveys to gather patient feedback. This strategy serves a dual purpose: demonstrating your commitment to patient satisfaction and gaining valuable insights into which technological advancements would most benefit your practice.

    optometry trends

     

    Optometry trends in the exam room: tech-driven precision and patient education

    Optometry relies heavily on technology, and investing in hardware upgrades is a significant financial commitment. However, if your hardware needs are met, but you still want to be at the forefront of technological advancements, consider specialized software and platforms to extend the possibilities of your existing devices.

    Dr. Maria Sampalis, OD, the owner of Sampalis Eye Care, Rhode Island, utilizes two such programs in her practice. To support her specialization in dry eye management, she employs CSI Dry Eye. Additionally, she uses Altris AI, an AI-powered platform for OCT scan analysis, to provide a second opinion and enhance diagnostic accuracy.

    Dr. Sampalis finds that the Dry Eye software allows her and her staff to analyze symptoms and images comprehensively, improving patient care, time savings, and increasing diagnostic precision. See how OCT AI works here. 

    Her patients also appreciate Altris AI, which analyzes OCT scans for over 70 pathologies and biomarkers while also calculating the risk of developing glaucoma.

    optometry industry trends

    Working with specialized software solutions improves diagnostic accuracy and aids in patient education. Visual representations of their conditions, facilitated by these technologies, empower patients with a clearer understanding, leading to increased treatment compliance.

    Optometry trends

    Eye Place, an optometry center in Columbia, also leverages Altris AI, among other cutting-edge technologies. They capture images using the Topcon Maestro2 OCT and use Image Net6 software to export DICOM files to the Altris AI platform.

    trends in optometry

    Beyond AI-powered OCT analysis, Eye Place utilizes state-of-the-art diagnostic tools, such as 3D OCT equipment, to screen for serious conditions, including glaucoma, diabetes, and macular degeneration. Furthermore, they work with AdaptDX Pro, a technology capable of detecting macular degeneration earlier than traditional methods.

    Another case of optimizing and enhancing the exam process is West Broward Eyecare Associates. They implemented  Optify, a smart building solution offering full fiber connectivity. Patients can pre-select frames in the online optical store before their visit, streamlining the in-office experience. Additionally, the practice utilizes Dr. Contact Lens, a platform for convenient ordering, reordering, and prescription management for contact lens wearers, reducing paper waste.

    There are also advancements in AI transcription technology that are poised to ease clinical documentation and automate a traditionally laborious task.

    The adoption of AI in clinical documentation has been shown to reduce the time doctors spend on charting by approximately 2 hours per day. 

    AI exam transcription is still in the process, and the existing possibilities are not yet flawless—struggling with patient responses like “mm-hm” and “uh-huh”—the technology is evolving, promising greater efficiency and accuracy in the future. For example, one such program starts the transcription process of the exam by confirming patient consent and a click of the record button by the optometrist. Then, AI captures, structures, and summarizes information in real-time, filtering for relevant details to generate documentation for each patient appointment. 

    Optometry trends for competitive advantage: using AI in Marketing and Decision-making

    Some practice owners may still believe their patient demographics do not necessitate an expanded online presence, particularly when considering elders. But you should be different from your competitors.

    The reality is that today’s patients, regardless of age, are increasingly turning to the Internet for information and services. While word-of-mouth referrals remain valuable, a solid online presence is essential for practice growth and visibility in today’s competitive landscape.

    Twin Forks Optometry and Vision Therapy in New York reports that their most effective marketing strategy involves a monthly-to-quarterly newsletter distributed to existing patients. This newsletter highlights practice updates, recent vision therapy graduates, new podcast episodes, and seasonal information. They’ve also observed that educational posts generate significant engagement and have even led to new patient visits.

    optometry industry trends

    Voice Search Optimization (VSO) is emerging as one of the new trends in optometry that has the potential to benefit practices significantly. Dr. Brianna Rhue, OD, co-owner of West Broward Eyecare Associates in Florida, asserts that a search engine optimized (SEO) website alone will soon be insufficient for patients to discover your practice online easily, especially in highly competitive locations.

    Contrary to popular belief, it’s not just the tech-savvy individuals who rely on voice assistants. This technology is predominantly used by older individuals who haven’t mastered typing or face difficulties with it.

    However, while the benefits of digital communication are undeniable, it’s crucial to acknowledge that it often adds up yet another layer of responsibility to already overburdened teams. This is why generative AI tools like ChatGPT and Gemini are gaining popularity among optometrists, offering solutions to this and other challenges.

    For example, Dr. Ryan Cazares, the owner and founder of Scott Eye Care in Louisiana, utilizes ChatGPT to generate social media and educational content for his practice. He brainstorms with AI content ideas, creates visuals for social media and marketing campaigns, and has even developed a unique mascot (Dr. Seymour) that engages his audience.

    Trends in optometry

    The practitioner also uses AI to generate personalized educational materials for their patients. Traditionally, his practice relied on generic Optometric Association pamphlets, but now, it has transitioned to simple one-page educational sheets tailored to individual patient needs.

    trends in optometry

    Dr. Haley Perry, owner of Elite Eye Care, New York, provides another example of AI’s potential in practice management. Her goal for this year was to increase patient volume without expanding her staff, and ChatGPT played a pivotal role in achieving this objective. 

    Faced with the decision between two vendors for new exam room equipment, she used AI to analyze each vendor’s pricing and financing options, weigh the pros and cons of the equipment in relation to her goals, and forecast the return on investment (ROI) for each option. This analysis enabled her to select the most suitable vendor and estimate the timeframe for recouping her investment.

    Dr. Perry also leverages AI to analyze patient feedback, demographic data, and treatment outcome statistics to ensure equipment investments align with patient needs. For instance, if data reveals a high prevalence of conditions like glaucoma, AI can help justify investing in advanced glaucoma screening tools.

    FDA-cleared AI for OCT analysis

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    Summing up

    The optometry landscape is evolving, driven by raised patient expectations for convenience and efficiency. Practices adapt to these changes by embracing emerging optometry trends to achieve more precise diagnostics, streamline patient journeys, enhance the exam room experience, and build trust and connection. Much of this technology is AI-based, with even more advancements on the horizon. So, optometrists implementing these solutions today are poised to secure a significant competitive advantage.

     

  • How we build Ethical AI at Altris AI

    Andrey Kuropyatnyk
    03.09.2024
    13 min read

    How we build Ethical AI at Altris AI

    As the co-owner of the AI HealthTech startup, I get many questions regarding biases and the security of our AI algorithm. After all, Altris AI works directly with patients’ data, which is why these questions are inevitable and even expected. So, I decided to share our approach to building Altris AI as an ethical AI system. 

    From the very first moments of the company’s creation, I knew that AI and healthcare were two topics that had to be handled very carefully. That is why we ensured that every aspect of the AI platform creation aligned with modern security and ethics guidelines.

    It’s like building a house: you need to take care of the foundation before getting to the walls, roof, and decor. Without it, everything will fall sooner or later. Ethical principles of AI are this foundation.  

    The following aspects of Ethical AI were the most important for us: machine training ethics, machine accuracy ethics, patient-related ethics, eye care specialists-related ethics, usefulness, usability, and efficiency.

    FDA-cleared AI for OCT analysis

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    1. Machine Training Ethics

    To create an accurate algorithm capable of analyzing OCT scans, we needed to train it for years. When it comes to machine training, we speak about data for this training. There are 2 major aspects of machine training ethics that need to be discussed: data ownership and data protection

    Data ownership/Data privacy indicates authority to control, process, or access data. By default, all patients’ data belongs exclusively to patients; no one owns it and sells it to a third party. For Altris AI machine training, all the data was obtained from patients directly who voluntarily agreed to share it and signed relevant documents.

    More than that, no client’s data, under any circumstances, is used to train the Altris AI.

    Data protection

    • GDPR

    Currently, there are the following regulations to protect the confidentiality of patients’ data. The European Union (EU) has legislatures of General Data Protection Regulation (GDPR), Cybersecurity Directive, and Medical Devices Regulation.

    • HIPAA

    In the US, the Health Insurance Portability and Accountability Act (HIPAA) is suggested as a counterpart for European legislation to cover wider confidentiality issues in medical data.

    At Altris AI, we obtained EU certification and ensured that all data is GDPR and HIPAA-compliant. This also applies to all the patients’ data we receive. 

    • European Union Artificial Intelligence Act

    Provider obligations

    As a provider of a high-risk AI system, we comply with the obligations listed under Article 16.

    High-risk obligations

    Under Article 6, high-risk obligations apply to systems that are considered a ‘safety component’ of the kind listed in Annex I Section A, and to systems that are considered a ‘High-risk AI system’ under Annex III.

    At Altris AI we followed these obligations:

    • Established and implemented risk management processes according to Article 9.
    • Used high-quality training, validation, and testing data according to Article 10.
    • Established documentation and design logging features according to Article 11 and Article 12.
    • Ensured an appropriate level of transparency and provided information to users according to Article 13.
    • Ensured human oversight measures are built into the system and/or implemented by users according to Article 14.
    • Ensured robustness, accuracy, and cybersecurity according to Article 15.
    • Set up a quality management system according to Article 17.

    Transparency Obligations

    At Altris AI we also followed the transparency obligations under Article 50:

    • The AI system, the provider or the user must inform any person exposed to the system in a timely,  clear manner when interacting with an AI system, unless obvious from context.
    • Where appropriate and relevant include information on which functions are AI-enabled, if there is human oversight, who is responsible for decision-making, and what the rights to object and seek redress are.

    2. Machine Accuracy Ethics.

    Data transparency.

    Where transparency in medical AI should be sought?

    Transparency in Data Training:

    1. What data was the model trained on? Including population characteristics and demographics.

    The model’s proprietary training data set was collected from patients from several clinics who consented to share their data anonymously for research purposes. The dataset includes diverse and extensive annotated data from various OCT scanners, encompassing a range of biomarkers and diseases. It does not specifically target or label demographic information, and no population or demographic information was collected.

    2. How was the model trained? Including parameterization and tuning performed.
    The training process for the deep learning model involves several steps:

    • Data Annotation: Medical experts annotated the data, creating the ground truth for biomarker segmentation.
    • Data Preprocessing: The data is augmented using unsupervised techniques (e.g., albumentations library) to increase diversity during training.
    • Model Architecture: The model’s architecture is based on the UNet model with ResNet backbones, incorporating additional training techniques specifically engineered for OCT images.
    • Training Process: The model is trained using supervised learning techniques to predict the output biomarker segmentation mask and diagnosis label, employing backpropagation and gradient descent to minimize the loss function.
    • Parameterization: The model has millions of parameters (weights) adjusted during training. Hyperparameters such as learning rate, batch size, and the number of layers are tuned to optimize performance.
    • Tuning: Hyperparameter tuning is performed using techniques like grid search, random search, or Bayesian optimization to find the optimal set of parameters that improve the model’s performance on validation data.

    3. How has the model been trained to avoid discrimination?
    The model training uses a wide variety of data to ensure exposure to different perspectives, reducing the likelihood of reinforcing a single viewpoint. No data related to race, gender identification, or other sensitive attributes is used at any stage of the model’s lifecycle (training, validation, inference). The model solely requires OCT images without additional markers or information.

    4. How generalizable is the model? Including what validation has been performed and how do you get comfortable that it generalizes well.

    • Validation Methods: The model is validated using a variety of images that were not seen during training.
    • Performance Metrics: Metrics like Dice and F1 score are used to evaluate the model’s performance.
    • Cross-Domain Testing: The model is tested on images from different OCT scanners and time frames to ensure it can generalize well.
    • User Feedback: Real-world usage and feedback help identify areas where the model may not generalize well, allowing for continuous improvement.

    5. How explainable is the model? Including what explainability testing has been done, if any.

    Explainability Techniques: Techniques like SHAP (SHapley Additive exPlanations), GradCAM, and activation visualization are used to understand which parts of the input images the model focuses on when making predictions.

    Medical Expert Testing: Regular testing and analysis are conducted to ensure that the model’s detections make sense to medical experts and that the model’s decisions align with logical and reasonable patterns.

    Any AI system is opaque (unintelligible) for two reasons:

    • Innate complexity of the system itself.
    • Intentional proprietary design for the sake of secrecy and proprietary interests.

    Biases. In most instances, an AI tool that gives a wrong decision usually reflects biases inherent in the training data. Biases might be racial, ethnic, genetic, regional, or gender-based. 

    There should not be any bias related to race and ethnicity because there is no evidence that biomarkers and pathologies manifest themselves differently in patients of different races and ethnicities. Altris AI uses sufficiently diverse gender and age-related data to provide accurate results for OCT analysis.

    3. Patient-related ethics.

    Patient-related ethics in AI are based on the rights of beneficence, nonmaleficence (safety), autonomy, and justice. Patients exercise their rights either explicitly through informed consent or implicitly through norms of confidentiality or regulatory protections.

    Informed Consent. 

    Informed consent is based on the principle of autonomy. It could authorize the partial or complete role of algorithms in health care services and detail the process of reaching diagnostic or therapeutic decisions by machines. Clinicians should explain the details of these processes to their patients. Patients should have the choice to opt in or out of allowing their data to be handled, processed, and shared.

    As these rights can be enabled by eye care professionals, they remain on the side of eye care professionals in our case. However, eye care professionals who use Altris AI not only inform patients about using AI for OCT scan analysis but also use the system to educate patients with the help of color coding. 

    Confidentiality.

    Patients’ confidentiality is a legal obligation and a code of conduct. Confidentiality involves the responsibility of those entrusted to handle and protect patient’s data.

    All the data that is used inside the Altris AI platform is anonymized and tokenized, and only eye care professionals who work with patients see any personal information. For the Altris AI team, this data is viewed as a programming code.

    4. Eye care specialist-related ethics.

    AI systems, like Altris AI, are unable to work 100% autonomously, and therefore, eye care specialists who use them should also make ethical decisions when working with AI. 

    Overreliance on AI. One of the important aspects of physician-related ethics is overreliance on AI during diagnostic decisions. We never cease to repeat that Altris AI is not a diagnostic tool in any sense; it is a decision-making support tool. The final decision will always be made by an eye care professional. It is an eye care professional who must take into consideration the patient’s clinical history, the results of other diagnostic procedures, lab test results, concomitant diseases, and conclusions from the dialogue with the patient to make the final decision. 

    Substitution of Doctors’ Role. Considering the information mentioned above, it is important to clarify the aspect of substituting eye care specialists. It should always be kept in mind that the aim of adopting AI is to augment and assist doctors, not to replace them.

    Empathy. Empathetic skills and knowledge need to be further incorporated into medical education and training programs. AI performing some tasks offers space for doctors to utilize empathy in medical education and training.

    FDA-cleared AI for OCT analysis

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    5. Usefulness, Usability, and Efficacy. 

    According to the Coalition for Health AI (CHAI) checklist, AI in healthcare must be, first of all, useful, usable, and efficient.

    To be useful, an AI solution must provide a specific benefit to patients and/or healthcare delivery and prove to be not only valid and reliable but also usable and effective. The benefit of an AI solution can be measured based on its effectiveness in achieving intended outcomes and its impact on overall health resulting from both intended and potentially unintended uses. An assessment of benefits should consider the balance between positive effects and adverse effects or risks. 

    In the case of Altris AI, its usefulness is proved by the clients’ testimonials we receive regularly. 

    Relatedly, an effective AI solution can be shown to achieve the intended improvement in health compared to existing standards of care, or it can improve existing workflows and processes.

    With Altris AI, we make patient screening and triage faster and more effective. We also significantly improve the detection of early pathologies, such as early glaucoma, which are often invisible to the human eye. 

    Usability presupposes that the AI tool must be easy for healthcare practitioners. Altris AI is actively used by more than 500 eye care businesses worldwide, proving its usability. Moreover, we constantly collect feedback from users and improve the platform’s UI/UX.

    Conclusion

    In conclusion, Altris AI has built its platform with a strong commitment to ethical AI principles, ensuring patient data protection, transparency, and compliance with global regulations like GDPR HIPAA, EU AI Act. The system is designed to support, not replace, eye care professionals by enhancing diagnostic accuracy and improving early detection of diseases. By emphasizing machine training ethics, patient-related rights, and the usability of their AI tool, Altris AI fosters trust in healthcare technology while maintaining high standards of transparency, accountability, and human oversight in medical decision-making.

  • Optometry Technology: What to Expect? 

    optometry technology
    Maria Znamenska
    7 min.
    7 min.

    Optometry Technology: What to Expect? 

    For this article, we surveyed eye care professionals on which optometry technology appears most promising to them. The answers were divided among AI for more precise diagnostics, advanced contact lenses, and new iterations of OCTs.

    Of course, this is not the whole list of possible new tech in optometry, but these are the topics that draw the most attention today. 

    The article delves deeper into each of these technologies, as well as explores oculomics, the new way of understanding the correlation between eye pathology and overall human health.

    Explore how AI for OCT scan analysis really works

    New tech in optometry: AI for Medical Image Analysis

    AI has blossomed in recent years, transforming not only how we work and relax but also how we manage our health. It’s no surprise that our survey of professionals revealed AI as the most promising technology in optometry.

    The most immediate and practical AI implementation in optometry is the analysis of medical images, such as fundus photos and OCT scans.

    They require no additional equipment beyond the OCT and fundus cameras many practitioners already own, are cost-effective, and add huge value to a practice. 

    optometry technology

    There are many companies that detect a number of biomarkers and help with diagnostic decision-making already, and their number will only increase from year to year for several reasons:

    • AI systems for medical image analysis speed up patient triage
    • AI systems help to detect early, minor, and rare pathologies which sometimes can be missed
    • AI systems help with complex cases when a second opinion is needed
    • Quantitative analysis of biomarkers improves treatment results monitoring making it more efficient

    For instance, AI today can assess the early risk of glaucoma based on the GCC asymmetry measurements. Here is how AI-powered OCT workflow would look. 

    AI-assisted readings of OCT scans are already helping not only with pathology detection but also with the analysis of its progression or response to treatment. This represents a new approach to monitoring, where practitioners no longer need to sift through various patient notes but can directly compare reports from previous examinations and observe how, for instance, shadowing has changed in micrometers.

    technology in optometry

    AI programs are becoming even more invaluable with an aging population, as diseases prevalent in older individuals become increasingly common while ophthalmology and optometry face a shortage of specialists. This situation will transform the optometrist’s role, with AI empowering practitioners with the diagnostic capabilities to manage many conditions without referral. This will benefit patients, enabling timely routine screenings and diagnoses and preventing months-long waits that can sometimes lead to irreversible blindness.

    AI systems are also being implemented in ophthalmic trials for biomarker detection, exploring the relationship between imaging biomarkers and underlying disease pathways. For instance, a recent study linked levels of various cytokines, including VEGF, MCP-1, and IL-6, with specific OCT-derived biomarkers like fluid parameters and outer retinal integrity. 

     

    new tech in optometry

    This significantly accelerates the research process, assisting in identifying the right target audience based on OCT scans, eliminating manual data annotation, and revealing the subtlest changes, progression or regression, and patient responses during trials. 

    While material advancements allow us to build more precise machines, the new tech in optometry likely won’t involve some unheard-of device. Instead, AI software will enable us to extract the maximum potential from the technologies we already use.

    Explore how AI for OCT scan analysis really works

     

    New Tech in Optometry: New Iterations of OCT

    Even though OCTs entered the market relatively recently, they swiftly became indispensable ancillary tests in ophthalmic practice for many professionals. The primary reason is their high-quality imaging of the retina, nerve fiber layer, and optic nerve, offering a near in-vivo “optical biopsy” of the retina.

    However, the technology continues to evolve – partly due to technological advancements and partly due to the ability to extract even more data from OCT machines through sophisticated software.

    SD-OCT is undergoing continuous development, expanding its range of applications. Multimodal imaging, which combines SD-OCT with other imaging techniques like autofluorescence and angiography, now allows for improved diagnosis and management of a wider array of diseases. 

    Several prominent OCT evolutions combine technological advancements and promise widespread adoption. They are:

     

    New Tech in Optometry: En-face OCT

    En-face OCT in current systems is based on software reconstruction of OCT images. Image slices are selected retrospectively from full recorded volumes or calculated by depth projection along specific depth ranges, enabling three-dimensional data visualization in a fundus projection. This technique allows the projection of specific retinal and/or choroidal layers at a given depth onto an en-face view.

    new tech in optomery

    While we are more accustomed to working with cross-sectional images (B-scans), microstructural changes and the retinal and choroidal vasculature morphology are challenging to evaluate using B-scans alone. En-face OCT offers numerous advantages, including the ability to precisely localize lesions within specific subretinal layers using their axial location on OCT cross-sections and to register projected OCT images to other fundus imaging modalities using retinal vessels as landmarks.   

    Currently, en-face OCT is being applied to various specialized areas within the eye, encompassing the anterior segment, glaucoma, infectious diseases, and the retina.

     

    Optometry Technology: SS-OCT

    Like SD-OCT, swept-source OCT (SS-OCT) utilizes Fourier domain technology to optimize higher-quality wavelength transduction within the frequency domain. This enables rapid sweeping scan patterns across a broad bandwidth.

    However, instead of a broad-bandwidth light source projected all at once, as in SD-OCT, SS-OCT employs a single tunable laser that sweeps through different frequencies to cover the entire spectrum swiftly. The light reflected from the eye is captured by a photodetector significantly faster than the charge-coupled device (CCD) camera used in SD-OCTs. This difference translates to a faster scanning speed of up to 400,000 axial scans per second, eliminating the typical depth-dependent signal drop-off associated with SD-OCT. Additionally, the faster scanning speed reduces image distortions caused by eye movements and allows for wider B-scans, facilitating widefield imaging.

    Furthermore, many SS-OCT systems utilize a light source centered at an approximately 1050 nm wavelength, providing better tissue penetration than SD-OCT. This allows for visualization of structures like the choroid, lamina cribrosa, and structures at the anterior chamber angle. This enhanced penetration is crucial in diseases like Central Serous Chorioretinopathy, where evaluating the entire thickness of the choroid can be challenging.

    Moreover, volumetric analysis of the choroid and various pathological features can aid in monitoring the progression of Wet AMD, CSCR, and Diabetic Retinopathy, as well as assessing the response to treatments such as anti-VEGF agents, laser photocoagulation, and photodynamic therapy (PDT).

     

    Optometry Trends: OCT Angiography

    Given that many ocular diseases are associated with vascular abnormalities, the ability to visualize and quantify blood flow in the eye is crucial. Traditionally, fluorescein angiography (FA) and indocyanine green angiography (ICGA) have been used for this purpose, but these procedures require intravenous injection of contrast agents, which is not only time-consuming but may lead to allergic reactions or potentially serious side effects.   

    OCTA, on the other hand, produces high-resolution, 3D angiograms of the retinal and choroidal vascular networks, taking advantage of the eye’s unique characteristic as the only organ allowing noninvasive, direct observation of its blood vessels’ structure and function. OCTA detects blood flow using intrinsic signals to capture the location of blood vessels. While it has limitations such as insensitivity to leakage and a relatively small field of view, the development of OCTA has the potential to significantly enhance our understanding of the eye’s physiology and pathophysiology, providing depth-resolved angiographic maps of the tissue’s vascular structure down to the capillary level.

    OCTA is particularly valuable in clinical settings where pathologies like diabetic retinopathy, age-related macular degeneration, retinal vein occlusions, and macular telangiectasia are frequently encountered. These conditions often alter blood flow or the blood vessels themselves in the retina, making imaging these vessels essential for diagnosis and management.

    Wide-Field and Ultrawide-Field OCT (WF-OCT and UWF-OCT)

    While OCT is a powerful ocular imaging tool, it has traditionally been limited by a relatively narrow field of view (FOV) – typically around 20 degrees × 20 degrees. To address this limitation, two advancements have emerged:

    • Wide-field OCT (WF-OCT) with an FOV of approximately 60-100 degrees captures the retina’s mid-periphery up to the posterior edge of the vortex vein ampulla.
    • Ultrawide-field OCT (UWF-OCT) with an FOV of up to 200 degrees, mapping the far periphery of the retina, including the anterior edge of the vortex vein ampulla and beyond.

    WF-OCT provides additional information compared to routine 6-9 mm scans in conditions such as diabetic retinopathy (DR), central serous chorioretinopathy (CSCR), polypoidal choroidal vasculopathy (PCV), peripapillary choroidal neovascular membrane (CNVM), or uveitic entities. It facilitates easier visualization of anatomical details of peripheral retinal changes like ischemic areas in DR, retinal vein occlusions, or sites of retinal breaks, peripheral retinal detachment, retinoschisis, and choroidal lesions (melanoma, nevus, hemangioma, choroidal metastasis).   

    As with other OCT iterations, WF and UWF OCT will likely provide the most significant insights when routinely combined with other modalities, such as OCT angiography.

    optometry technology

     

    New Tech in Optometry: Advanced contact lenses

    In our lifetime, contact lenses have evolved from mere corrective devices to sophisticated optical instruments. There are several ways that contact lenses (CLs) continue to advance:

    • Manufacturing optimization: Automation and robotization of the process for higher precision and a shift towards a more environmentally friendly approach.
    • Design: More precise designs tailored to the wearer’s eye with the help of 3D printing.
    • Material advancements: Nanotechnology/surface modifications for improved wettability, lubricity, and antimicrobial properties. Increased focus on biomimetic design.
    • Technological advancements: Smart lenses with thin and ultra-thin transistors capable of reacting to or registering the wearer’s stress levels, glucose levels, etc.

    Let’s take a closer look at a few examples of Smart Contact Lenses (SCLs) that combine some of the characteristics mentioned earlier.

    SCLs are wearable ophthalmic devices that offer functions beyond vision correction. These devices are integrated with sensors, wireless communication components, and microprocessors to measure biological markers. They can treat ocular pathologies by delivering drugs, light, heat, and electrical stimulation, or they can aid in diagnosing. Currently, some SCLs can help manage glaucoma, cataracts, dry eye syndrome, eye infections, and inflammation. In development are lenses to treat age-related macular degeneration (AMD), diabetic retinopathy (DR), retinitis, and posterior uveitis. An artificial retina (retinal prosthesis) is in its early developmental stage, with the potential to restore vision to some degree for specific types of blindness caused by degenerative diseases.

    Scientists from the School of Medical Sciences in New South Wales have implanted epithelial stem cells (ESCs) from a healthy eye into a contact lens. This innovation has shown promise in repairing vision loss caused by a damaged cornea. In another breakthrough, scientists from Oregon State University have utilized ultra-thin transistor technology to design SCLs that can monitor the wearer’s physiological state. While this futuristic contact lens is still in the prototype phase, several biotech companies have already expressed interest in its development.

    Smart lenses also show great promise in drug delivery. One of the main challenges with eye drops is their low bioavailability (less than 5%), primarily due to high tear turnover rates, blinking, nasolacrimal drainage, non-productive absorption by the conjunctiva, and the cornea’s low permeability. Therefore, improving bioavailability by increasing the drug’s residence time on the ocular surface remains a critical research focus. 

    Additionally, drug delivery via SCLs can offer more precise dosing. With traditional eye drops, dosage accuracy relies on the patient’s ability to tilt their head and squeeze the inverted bottle correctly, leading to inconsistent application. Consequently, compliance rates for eye drops are low. In contrast, the drug delivery process with SCLs involves lenses loaded with medication for a day or several days, potentially enhancing compliance, especially for individuals accustomed to wearing contact lenses as part of their routine.

     

    optometry technology

    Just as artificial intelligence is merging with ophthalmic devices for detection and analysis, opening new possibilities, optometry trends are also venturing contact lenses into the multidisciplinary field of theranostics, which combines therapeutics and diagnostics. This field is uncovering new avenues of research, shedding light on disease mechanisms, and driving drug and medical device development. Theranostics leverages knowledge and techniques from nanotechnology, molecular and nuclear medicine, and pharmacogenetics to achieve goals such as in vitro diagnostics and prognostics, in vivo molecular imaging and therapy, and targeted drug delivery. This approach is shifting patient care towards proactive strategies and predictive treatments.

    Optometry Technology: Oculomics

    For decades, researchers have sought to measure retinal changes to identify ocular biomarkers for systemic diseases, a field now known as oculomics.

    As mentioned earlier, the eye provides a unique opportunity for direct, in vivo, and often non-invasive visualization of the neurosensory and microvascular systems:

    • The eye shares a common embryological origin with the brain, and the neurosensory retina and optic nerve are considered extensions of the brain, allowing direct observation of the nervous system.
    • Due to the length and continuity of the visual pathway, along with trans-synaptic degeneration mechanisms, damage to the central nervous system often manifests as changes in the inner retina.
    • The blood-retina barrier, similar to the blood-brain barrier, selectively allows the transport of essential substances to these metabolically active structures.
    • The aqueous and vitreous humors are plasma-derived and transport lipid-soluble substances through diffusion and water-soluble substances through ultrafiltration.
    • The lens, which grows continuously throughout life, accumulates molecules over time, providing a potential map of an individual’s molecular history.

     

    The link between the eye and overall human health is not new. However, with the increasing availability and complexity of large, multimodal ocular image datasets, artificial intelligence-based ocular image analysis shows great promise as a noninvasive tool for predicting various systemic diseases. This is achieved by evaluating risk factors, retinal features, and biomarkers. Thanks to the massive datasets generated through recent ophthalmic imaging, which are now being used for deep learning and AI training, oculomics is starting to yield more precise answers. For example, the NHS alone has been conducting eye tests for over 60 years, resulting in databases containing millions of images, complete with patient records and long-term health outcomes. These datasets have been fed into AI algorithms, leading to models that can already predict cardiovascular risk factors with accuracy comparable to the current state-of-the-art methods.

    It’s a significant opportunity because, with the aging population, a primary healthcare focus will be not only extending lifespan longevity but also maintaining crucial healthspan functions. The primary obstacles to both longevity and healthspan are chronic diseases, referred to as the “Four Horsemen of Chronic Disease” (Cardiovascular disease, Cancer, Neurodegenerative disease, and Metabolic disease). Many of these can be, if not entirely prevented, at least minimized in terms of progression through timely detection and intervention.

    One major advantage of discovering biomarkers that can predict diseases is that eye screenings are generally less intimidating than other procedures. For example, a person might regularly visit an optometrist for prescription glasses but avoid routine cervical screenings. A less anxiety-provoking and familiar procedure could significantly impact healthcare engagement. Such screenings could also make a substantial difference for chronic conditions like dementia, diabetes, and cardiovascular disease, which constitute a significant portion of the “burden of disease.”

    Explore how AI for OCT scan analysis really works

    Summing up

    Artificial intelligence has already significantly impacted our lives. It holds immense promise in optometry technology, as its primary capability—analyzing massive datasets—aligns perfectly with eye care, where thousands of images are generated daily. Training on such vast amounts of data will lead to breakthroughs in pathology and biomarker detection and their correlation with overall human health. It will enable us to take a giant leap towards proactive and predictive medicine, helping our patients live longer, healthier lives.

  • Altris AI Announces Appointment of Grant Schmid as a VP of Business Development

    Altris Inc.
    26.08.2024
    1 min.

    Altris AI Announces the Appointment of Grant Schmid as the VP Business Development

    Altris AI, a leading AI software provider for OCT scan analysis, announces the appointment of Grant Schmid as the Vice President Business Development. Mr. Schmid is a proven leader in the eye care industry and has solid experience that will help him establish new partnerships for the company and lead corporate sales.

    The recent surge in AI (artificial intelligence) applications across industries has transformed the technology landscape, especially in healthcare. While AI companies have existed for years, the explosion of tools like ChatGPT has popularized the integration of AI in everyday processes.

    Grant was drawn to Altris AI for its focus on harnessing AI capabilities to assist doctors in making faster and more informed decisions.

    According to Mr. Schmid, 

    “Healthcare professionals are inundated with more data than most other professions, particularly in the eye care segment. Eye care specialists are subjected to multiple tests and instruments, generating a vast amount of data that must be reviewed comprehensively. A single Optical Coherence Tomography (OCT) test can contain over five hundred thousand data points. This necessitates that doctors carefully analyze results from various tests, often overlapping with different devices, which can be time-consuming and detract from the time they have with their patients.”

     

    At Altris AI, the mission is not to replace the vital human connection in medicine but to enhance it.

    Grant also remarked that, 

    “Some AI companies are positioning their products as replacements for human doctors, which undermines the essential aspects of patient care. Patients need to feel heard, and doctors choose this profession to help individuals. Altris AI enables doctors to spend more time with their patients, allowing them to focus on the human aspects of care rather than getting lost in data analysis.” 

     

    About Altris AI.

    Altris AI is a part of the Altris Inc. ecosystem that includes Altris AI( a standalone AI platform for OCT scan analysis that improves diagnostic decision-making for eye care specialists) and Altris Education OCT (a free mobile app for OCT education interpretation). The mission of the company is to set higher diagnostic standards in the eye care industry and improve patient outcomes as a result. To achieve this mission the company created an AI-powered platform for OCT scan analysis that detects the biggest number of biomarkers and retina pathologies on the market today: 70 + including early glaucoma. More than that, the company offers an automated quantitative analysis of biomarkers and a progression analysis module for monitoring treatment results more efficiently.

  • Increasing Referral Efficiency in Eye Care: Addressing Data Gaps, Wait Times, and more

    Optometry referral
    Maria Martynova
    04.07 2023
    7 min read

    Ophthalmology has the highest average number of patients waiting, but up to 75% of patients make preventable trips to eye hospitals and general practitioners. Some of these patients are referred by optometrists who, more often than not, receive no feedback on the quality of their referrals, perpetuating this cycle. Optometry referral is puzzling for both primary and secondary education. This article examines the referral procedure and potential solutions for increasing referral efficiency in eye care that practitioners can implement.

    More than 25% of U.S. counties lack a single practicing eye care provider, and the situation isn’t unique to the U.S. In the UK, ophthalmology has been the most overburdened healthcare sector for some time. With a globally aging population and an increasing prevalence of age-related diseases, ensuring accessible eye care is crucial. Unfortunately, the reality is quite the opposite. One contributing factor is the high number of failures in the referral process.

    How did we arrive at this point, and what can be done to improve it?

    Altris AI’s survey identified a lack of data and increased patient wait times as the top problems with referrals for practitioners, while lack of co-management tools and poor communication/feedback ranked lower.

    What are the top problems with the referral that eye care specialists are facing

    Let’s dive into more details:

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    Optometry referral: top problems 

    • Lack of diagnostic data

    The ultimate goal of optometry referral is to ensure patients receive appropriate treatment for their specific pathology or confirmation of its absence. The receiving specialist’s first step is to review the referral report, making its completeness and clarity paramount. While there is a clear need for specialised assessment and treatment, almost 80% of those attending eye casualty do not require urgent ophthalmic attention following triage, and up to 60% of patients are seen and discharged on their first visit.

    In eye care, both text information and accompanying images are crucial in ensuring efficient and accurate diagnoses. 

    However, handwritten and fragmented data continue to pose significant challenges in the patient referral process. Despite the prevalence of electronic health records (EHRs), over half of referrals are still handled through less efficient channels like fax, paper, or verbal communication. This can lead to fragmented or doubled patient data, potential gaps in care, and delays in treatment. 

    The study on the Impact of direct electronic optometric referral with ocular imaging to a hospital eye service showed that, given some limitations, electronic optometric referral with images to a Hospital Eye Service (HES) is safe, speedy, efficient, and clinically accurate, and it avoids unnecessary HES consultations. 

    optometry referral

    Direct electronic referrals with images reduced the need for hospital eye service appointments by 37% compared to traditional paper referrals. Additionally, while 63% of electronic referrals led to HES appointments, this figure was 85% for paper referrals. 

    Biomarkers measuring on Altris AI OCT report

     

    While incorporating images like OCT scans can significantly enhance understanding, some subtle or early-stage pathologies might still be overlooked. This is where detailed and customized reports become invaluable.

    To illustrate the point, here is a handwritten referral compared to one of the types of customised OCT report from the Altris AI system, a platform that automates AI-powered OCT scan analysis for 70+ pathologies and biomarkers. This screenshot, in particular, shows segmented retina layers and highlights biomarkers of Dry AMD alongside a comparison of the patient’s macular thickness over visits.

    Increasing Referral Efficiency in Eye Care: customizable OCT reports vs written reports

    • Lack of experience and access to second opinion

    Research reveals a notable inverse relationship between clinician experience and the frequency of false-positive referrals in optometry, echoing findings in other medical fields where diagnostic proficiency typically improves with experience. This highlights the importance of recognizing the learning curve inherent in optometric practice and supporting less experienced practitioners. 

    The challenge is amplified by the fact that optometrists often practice in isolation, lacking the immediate professional support network available to their hospital-based counterparts. Unlike colleagues in hospital settings who have ready access to peer consultation for other opinions or guidance, optometrists often face limited opportunities for collaborative decision-making and skill development. 

    Another problem specialists often face is a lack of confidence in diagnosing, which may or may not be linked to experience. Knowing that their patients could potentially suffer irreversible vision loss from a pathology not yet detected during an exam, they often err on the side of caution and refer to a hospital. While this “better safe than sorry” approach is understandable, it places a significant burden on hospitals, extending wait times for those already at risk of blindness.

    These concerns primarily revolve around glaucoma, age-related macular degeneration (AMD), and diabetic retinopathy (DR). AI can help identify these and other eye diseases at their earliest stages during routine visits. Some retinal changes are so minute that they escape detection by the human eye, making the program’s ability to detect tiny retinal changes invaluable.

    Another significant benefit of AI systems lies in their approach to OCT analysis for glaucoma. Traditional methods rely on normative databases to assess retinal normality, but these databases are often limited in size and represent a select group of individuals. This can result in missed diagnoses of early glaucoma in those who deviate from the “norm” or unnecessary referral from optometry to ophthalmology for those who don’t fit the “normal” profile but have healthy eyes. AI can overcome this limitation by providing more personalized and comprehensive analysis.

    • Increased wait times for patients with eye doctor referral

    The National Health Service (NHS) is grappling with significant backlogs in ophthalmology services, which account for nearly 10% of the 7.8 million patients awaiting treatment. 

    The consistently high average number of patients waiting per trust in Ophthalmology, with high follow-up waitlists, delays care that poses substantial risks. The Royal College of Ophthalmologists reported that the risk of permanent visual loss is nine times higher in follow-up patients than in new patients. With 30% more patients on ophthalmology waitlists than pre-pandemic, the number of people at risk of sight loss may have increased.

    Community Eyecare (CHEC), a provider of community-based ophthalmology services, received around 1000 referrals per week before the pandemic, further highlighting the strain on the system.

    An analysis of electronic waitlists revealed that administrative issues, such as deceased patients or those already under care remaining on the list, artificially inflate wait times by up to 15%. 

    Improving administrative processes and reassessing referrals for appropriateness could help address this problem. Additionally, interim optometric examinations could revise referral information or determine the necessity of hospital visits, further reducing wait times.

    Artificial intelligence can significantly speed up the screening process while reducing the controversy around diagnoses. This faster and more accurate diagnostic tool will enable more patients to be seen, allow for quicker responses to pathologies that pose a risk to eyesight, and reduce the burden on strained hospitals with needless patient referrals, as well as free up patients from unnecessary stress and wasted time.

    International studies have shown that collaborative care also can increase screening and detection rates of eye disease.

    • Lack of comanagement tools for optometry referral

    The increasing demand for Hospital Eye Services, projected to grow by 40% in the next two decades and currently accounting for 8% of outpatient appointments, necessitates a re-evaluation of referral pathways and comanagement strategies between optometrists and ophthalmologists.  

    The lack of digital connectivity between primary, community, and secondary care creates a significant barrier to effective collaboration. In many cases, optometrists cannot make direct digital referrals to Hospital Eye Service, often relying on general practitioners as intermediaries, causing delays in diagnosis and treatment.

    The COVID-19 pandemic highlighted the vital role of optometrists as first-contact providers for eye health, relieving pressure on hospitals. However, better integration between primary and secondary care is essential to build upon this and create a more sustainable eye care system. The current lack of digital connectivity hinders efficient communication and impedes the timely transfer of patient records, potentially leading to unnecessary referrals and delays in care.

    optometry referralAs David Parkins, the ex-president of the College of Optometrists, emphasizes, the solution lies in increased integration and streamlined communication between primary and secondary eye care services. Implementing integrated digital platforms for referrals and feedback can enhance collaboration, improve patient outcomes, and reduce the burden on hospitals.

    Leveraging optometrists’ expertise through shared care programs and direct digital referral pathways can alleviate the strain on eye hospitals and ensure timely access to care for patients with eye conditions.

    • Referral to Ophthalmology: Poor communication/lack of feedback

    A recent study published in Ophthalmic and Physiological Optics revealed that in 73% of cases, the referring optometrist was unaware of the outcome of their referral. 

    This lack of closure can lead to unnecessary re-referrals, patient anxiety, and potential treatment delays that could result in preventable vision loss, especially considering the extended waiting times for hospital eye service appointments.

    Effective referral in eye care requires a closed feedback loop, where referring providers receive timely updates and reports from specialists. However, studies have shown that up to 50% of primary care providers (PCPs) are unsure whether their patients have even been seen by the referred specialists. This disconnect necessitates time-consuming follow-up calls and manual data integration, increasing the risk of errors and jeopardizing patient care.

    The absence of consistent feedback also impacts optometrists’ professional development. Without knowing the accuracy of their referrals, optometrists cannot identify areas for improvement or refine their diagnostic skills. This is particularly relevant for newly qualified practitioners who may benefit from feedback to enhance their clinical judgment.

    Implementing electronic referral systems that include feedback mechanisms can significantly improve communication and close the feedback loop. This would enable optometrists to track the progress of their referrals, receive timely updates on patient outcomes, and make informed decisions about future referrals. 

    Technology is also bridging the gap in specialist communication by enabling secure online consultations, such as live chat with dedicated ophthalmologists. A notable example in the UK is Pocket Eye, a platform designed to empower eye care professionals with clinical advice, diagnostic and image support, and AI-powered OCT analysis. 

    Summing up

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    Implementing digital platforms that foster collaboration between eye care providers, increasing confidence in complex cases, and utilizing AI technologies to expedite diagnostics is crucial in a world where an aging population will increasingly rely on healthcare. Referral to ophthalmology from optometry should be effective, fast, and painless to eye care specialists and patients. 

     

  • OCT Reports: Enhancing Diagnostic Accuracy

    Сustomisable OCT reports for eye care practice enhancement
    Maria Martynova
    07.06. 2023
    8 min read

    The average OCT device is a significant investment, costing upwards of $40,000. As eye care specialists, we recognize the revolutionary power of OCT. However, patients often receive only a standard OCT report from this investment. Unfortunately, many patients are unaware of OCT’s true value and may not even know what it is. This raises a crucial question: are these standard reports truly reflecting the full diagnostic potential of such an expensive and sophisticated device? Are we, as professionals, maximizing the capabilities of this technology to ensure optimal patient care?

    This article explores how OCT Reports address these shortcomings, enhancing diagnostic accuracy, treatment monitoring, referral efficiency, patient education, and audit readiness. 

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    Common OCT reports and their limitations

    How does the standard report look?

    An example of a common OCT report

    OCT has become a golden standard for diagnosing and monitoring many ocular pathologies, thanks to its unparalleled level of detail in ophthalmic imaging.

    While retinal reports vary among OCT models, they typically include:

    • a foveally centered B-scan, 
    • a quantitative thickness map, 
    • and a semi-quantitative thickness map.

    The B-scan offers a visual snapshot of foveal architecture and confirms proper scan centering. The quantitative thickness map employs the ETDRS sector map to measure retinal thickness within a 6mm circle around the fovea, with specific measurements for the foveal sector (1mm), inner macular ring (3mm), and outer macular ring (6mm).

    Progression analytics enable comparison of serial macular scans, which is invaluable for managing vitreomacular interface disorders and macular edema. The semi-quantitative thickness map provides a broader overview of retinal thickness throughout the scan.

    Given this amount of data, it is challenging to identify subtle and localized retinal pathological changes. As a result, entire OCT datasets are represented by few aggregated values, and the standard OCT reports generated by most devices often rely on significant data reduction to simplify interpretation, which you can usually not customize. 

    OCT report interpretation: 3 methods exist for displaying OCT data

    Firstly, acquired 2D image slices are presented individually. This allows for detailed examination, but navigating through numerous images can be cumbersome, particularly with large datasets.

    Wet AMD on OCT, example provided by Altris AI platform

    Secondly, a fundus image is displayed with superimposed retinal layers. This facilitates linking layers to the fundus, but only one layer can be examined at a time, hindering the analysis of multiple layers simultaneously.

     

    OCT scan and fundus image on an example of OCR report

    Thirdly, the OCT tomogram is visualized in 3D, providing a comprehensive overview, but adjusting the visual representation often has limitations. Additionally, combined 3D visualizations of the tomogram and layers are typically unavailable, potentially obscuring spatial relationships.

     

    3d visualization of OCT scan results in OCT report

    While existing reports offer diverse approaches to managing, analyzing, and presenting OCT data, each solution focuses on specific aspects and lacks customization. The situation becomes even more complex if scans come from different OCT devices, as manufacturers only provide software for the data for proprietary OCT scanners. Consequently, no approved way of viewing, analyzing, or comparing data from different manufacturers exists.

    Furthermore, there are limited possibilities for implementing prototypes to perform such tasks since software libraries are provided with exclusive licenses and incomplete data specifications. Hence, managing and analyzing OCT data and relating them to other information are challenging and time-consuming tasks.

    Often, supplementary software is utilized to overcome these limitations by providing additional information, visualizing and emphasizing data differently, and enabling the selection of relevant subsets.

    How can customized reports for OCT help?

    Results of Altris AI survey for eye care specialists on What's the main purpose of OCT reports

    Altris AI’s recent survey has revealed that the key benefits of OCT technology for eye care specialists lie in treatment monitoring, patient education, and referral optimization.

    Dr.-Aswathi-Muraleedharan on OCT reports

    • Measuring treatment progress: biomarkers tracking, pathology progression

    Imaging biomarkers are a particularly attractive option for clinical practice due to their non-invasive and real-time nature. Quantitative measurements of retinal thickness, fluid volume, and other biomarkers relevant to diseases like diabetic retinopathy and age-related macular degeneration aid in treatment monitoring.

    Pathology Progression, part of Altris AI customisable OCT reports

     

    OCT reports with customized measurements and selected biomarkers, retinal layers, or segments allow for precise focus on treatment monitoring and patient response to therapy. This personalized approach enhances clinical decision-making by highlighting each case’s most relevant information. 

    Thickness comparison, part of ALtris AI customisable OCT reports

    In current clinical practice, macular damage assessment typically involves measuring the distance between the ILM and RPE layers, summarized in a post-scan report. 

     ILM and RPE layers on OCT report

    However, these reports often fall short of visualization best practices, employing ineffective or inconsistent color schemes. Additionally, they lack flexibility, with static visuals preventing in-depth examination of specific details. Despite these limitations, these reports remain valuable for many clinicians by distilling complex data into a manageable format. 

    Enhanced OCT data visualization offers a promising solution to these challenges. It enhances report clarity and comprehensibility while preserving the richness of the underlying data. 

    Let’s explore how this applies to a clinical case, such as monitoring a patient with Wet AMD during follow-up visits.

    Wet AMD on OCT scan, example provided by ALtris AI platform

    Data demonstrates that OCT findings can reveal the onset or progression of neovascular AMD before a patient reports new symptoms or changes in visual acuity. In fact, OCT images are reported to have the best diagnostic accuracy in monitoring nAMD disease states. This underscores the importance of key OCT findings or biomarkers in personalizing anti-VEGF treatment, achieving disease control, and reducing monitoring burdens.

    Jennifer O'Neill on OCT reports

    Central Retinal Thickness emerged as one of the earliest OCT biomarkers used as an outcome measure in clinical trials for nAMD.

    However, due to confounding factors, CRT’s use in outcome-based assessments of nAMD varies. Thus, it is essential to evaluate additional morphological changes alongside retinal thickness and their relationships with functional outcomes.

    It has been reported that OCT images have the best diagnostic accuracy in monitoring nAMD disease states.

    Another finding that is correlated with a worsening VA due to the associated photoreceptor defects is any damage to the four outer retina layers, including the RPE, interdigitation zone (IZ), ellipsoid zone (EZ), and external limiting membrane band (ELM). 

    Biomarkers measuring on Altris AI customisable OCT reports

    OCT is a valuable imaging tool for visualizing subretinal hyperreflective material (SHRM). It can automatically identify and quantify SHRM and fluid and pigment epithelial detachment to calculate the overall risk of worsening visual outcomes associated with SHRM.

    subretinal hyperreflective material calculated by AI with ALtris AI

    Subsequent follow-up visits will then display the most relevant picture, highlighting the most pertinent biomarkers for tracking a particular pathology (wet AMD in our example) and comparing their volume, progression, or regression through visits.

    Monitoring RPE disruption progression on OCT with Altris AI

    Another helpful option is retinal layer segmentation, which focuses solely on the retinal layers of interest for the specific case. 

    This level of customization empowers clinicians with a comprehensive yet targeted view of the patient’s condition. It saves time from manually detecting anomalies on scans and facilitates informed decision-making and personalized treatment plans.

    • Glaucoma risk evaluation

    Millions risk irreversible vision loss due to undiagnosed glaucoma, underscoring the need for improved early detection. Current tests often rely on observing changes over time, delaying treatment assessment and hindering early identification of rapid disease progression. OCT frequently detects microscopic damage to ganglion cells and thinning across these layers before changes are noticeable through other tests. However, the earliest signs on the scan can still be invisible to the human eye.

    AI algorithms offer insights into glaucoma detection by routinely analyzing the ganglion cell complex, measuring its thickness, and identifying any thinning or asymmetry to determine a patient’s glaucoma risk without additional clinician effort.

    Altris AI's Early glaucoma risk assessment module

    Another significant benefit of AI systems is that OCT for glaucoma usually utilizes a normative database to assess retinal normality. However, these databases are limited in size and represent an average of a select group of people, potentially missing early glaucoma development in those who deviate from the “norm.” Conversely, individuals may be unnecessarily referred for treatment due to not fitting the “normal” profile, even if their eyes are healthy.

    • Crafting effective referral

    In the UK, optometrists are crucial in initiating referrals to hospital eye services (HES), with 72% originating from primary care optometric examinations. While optometrists generally demonstrate proficiency in identifying conditions like cataracts and glaucoma, discrepancies in referral thresholds and unfamiliarity with less common pathologies can lead to unnecessary or delayed referrals.

    Arun-Balasegaram on OCT reports

    At the same time, an evaluation of incoming letters from optometrists in a glaucoma service found that 43% of the letters were considered “failures” because they did not convey the necessity and urgency of the referral.

     So, having an elaborate record of the entire clinical examination in addition to a referral letter is crucial.

    infographic on how customised OCT reports can enhance referrals

    Customized OCT reports solve this challenge by streamlining the referral process and improving communication between optometrists and ophthalmologists. These reports can significantly reduce delays and ensure patients receive timely care by providing comprehensive and relevant information upfront.

    • Patient Education

     

    Elderly patient is investigating his OCT report with color coded by Altris AI biomarkers

    Patient education and involvement in decision-making are vital for every medical field and crucial for ophthalmology, where insufficient patient engagement can lead to irreversible blindness.

    Omer-Salim on OCT reports

    Research specifically targeting the ophthalmology patient population, which often includes older and potentially visually impaired individuals, reveals a clear preference for materials their eye care provider endorsed.

    Infographic on patient education: 94% of patients want patient education content

    Providing explicit visual representations of diagnoses can significantly improve patient understanding and compliance. Seeing photos of their condition, like glaucoma progression, builds trust and reinforces the importance of treatment recommendations.

    Surveying eye care professionals specializing in dry eye disease revealed a strong emphasis on visual aids during patient education. 

    Photodocumentation is a favored tool for demonstrating the condition to asymptomatic patients, tracking progress, and highlighting treatment’s positive outcomes.

    The visual approach provides tangible evidence of the benefits of their treatment investment, allowing for a deeper understanding of the “why” behind treatment recommendations and paving the way for ongoing collaboration with the patient.

    Kaustubh-Parker on COT reports

    Color-coded OCT reports for pathologies and their signs, severity grading, and pathology progression over time within its OCT analysis highlight the littlest bits that a patient’s unprepared eye would miss otherwise. With follow-up visits, patients can see what’s happening within their eyes and track the progress of any conditions during treatment.

    Biomarkers detected by Altris AI on OCT

    • Updating EMR and Audit readiness

    OCT reports are crucial components of a patient’s medical history and are essential for accurate diagnosis, personalized treatment, and ongoing monitoring. The streamlined process of integrating OCT data into EMR ensures that every eye scan, with its corresponding measurements, biomarkers, and visualizations, becomes an easily accessible part of the patient’s medical history.

    This is crucial for continuity of care and simplifies the audit process, providing a clear and comprehensive record of the patient’s eye health over time. Just optometry chains alone can perform an imposing volume of OCT scans, with some reaching upwards of 40,000 per week. While this demonstrates the widespread adoption of this valuable diagnostic tool, it also presents a challenge: the increased risk of missing subtle or early-stage pathologies amidst the sheer volume of data.

    Enhanced OCT reports offer a solution by providing a crucial “second look” at scan results. While not foolproof, this double-check significantly reduces the risk of overlooking abnormalities, ultimately improving patient outcomes and safeguarding the clinic’s reputation.

    In audits, comprehensive OCT reports are critical in ensuring regulatory compliance. As the Fundamentals of Ophthalmic Coding states, “It is the responsibility of each physician to document the interpretations as promptly as possible and then communicate the findings with the patient… to develop a fail-safe way to ensure that your interpretations are completed promptly.”

    Auditors typically look for several key elements in OCT reports:

    • Physician’s Order: Document the test order, indicating which eye(s) and the medical necessity.
    • Interpretation and Report: The physician analyzes the scan results, including any identified abnormalities or concerns.
    • Timely Completion: Prompt documentation and communication of findings to the patient.

    Customisable OCT reports can streamline this process by generating comprehensive reports that meet these requirements. These reports include detailed measurements, biomarker analysis, and clear visualizations, making it easier for physicians to review, interpret, and document their findings efficiently.

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    Summing up

    Standard OCT reports, while valuable, often need more customization due to data reduction and lack of customization. The inability to visualize multiple scans simultaneously or compare data from different devices hinders comprehensive analysis. Enhanced OCT reports address these limitations by offering detailed visualizations, customizable measurements, and biomarker tracking.

    Customisable OCT reports aid in the early detection and monitoring of diseases like wet AMD and glaucoma, empowering clinicians with accurate diagnoses and personalized treatment plans. Additionally, they streamline referrals by providing focused information and clear visualizations, reducing delays and improving communication between optometrists and ophthalmologists.

    These comprehensive reports also enhance patient education by offering clear visual representations of their conditions and treatment progress, fostering better understanding and compliance. Moreover, with detailed documentation and analysis, detailed reports ensure audit readiness for eye care professionals, mitigating the risk of missed pathologies and upholding regulatory compliance.

  • AI for Ophthalmic Drug Development: Enhancing Biomarkers Detection

    AI for Ophthalmic Drug Development
    Maria Martynova
    20.05.2023
    8 min read

    Despite increased research and development spending, fewer novel drugs and biologics are reaching the market today.

    Large pharmaceutical companies invest an average of over $5 billion and 12+ years in research and development for each new drug approval.

    The high failure rate of drug candidates (only 15% of Phase I drugs reach approval) further exacerbates the issue. This risk often leads pharmaceutical companies to favor lower-risk investments like biosimilars or generic drugs over novel therapies. 

    Due to the eye’s specialized anatomy and physiology, ophthalmic drug development faces unique challenges. Ocular barriers like the tear film and blood-ocular barrier can hinder drug efficacy. Many therapeutic endpoints in ophthalmology are subjective, making controlled trials difficult. The imprecise nature of some measurements further complicates trial design. Rare ophthalmic diseases pose additional challenges, as clinical trials may group diverse conditions, like multiple types of uveitic, together despite their distinct underlying mechanisms and therapeutic needs.

    Here is where AI enters the game. With its ability to rapidly analyze vast amounts of data and detect subtle patterns, AI is revolutionizing how we approach clinical trials for ophthalmic drugs.

    In this article, we will explore how AI for ophthalmic drug development transforms the landscape by accelerating the identification of biomarkers for conditions like diabetic retinopathy and age-related macular degeneration, ensuring the right patients are enrolled in trials, and providing quantitative metrics for evaluating treatment efficacy.

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    How AI for ophthalmic drug development can accelerate the search for biomarkers in clinical trials

    • Biomarkers for quantitative analysis before and after treatment

    A biomarker, as defined by the BEST Resource FDA-NIH Biomarker Working Group, is a characteristic that can be objectively measured and evaluated as an indicator of normal biological processes, disease processes, or responses to therapeutic intervention. Key characteristics of a useful biomarker include specificity, sensitivity, simplicity, reliability, reproducibility, multiplexing capability, and cost-effectiveness.

    Determining a biomarker’s performance involves assessing its:

    • analytical validity – how accurately it measures what it claims to measure;
    • clinical validity – how well it reflects a clinical feature or outcome;
    • clinical utility – how it improves patient outcomes or guides treatment decisions. 

    In the context of drug regulation, qualified biomarkers can serve as endpoints in clinical trials, potentially offering a more objective and less placebo-susceptible alternative to traditional patient-reported outcomes. 

    Imaging biomarkers are a particularly attractive option for clinical use due to their non-invasive, real-time, and cost-effective nature.

    In ophthalmology, AI-powered analysis of OCT scans can provide precise, quantitative measurements of retinal thickness, fluid volume, and other biomarkers relevant to diseases like diabetic retinopathy and age-related macular degeneration. These measurements can aid in diagnosis, disease staging, treatment monitoring, and prediction of treatment response.

    Systems like Altris AI for pathology detection and segmentation enabled automated disease characterization and longitudinal monitoring of therapeutic response in AMD. Multiple studies have demonstrated the value of volumetric fluid characterization, compartment-specific OCT feature evaluation, and subretinal fibrosis and hyperreflective material quantification.

    A study  has shown the potential of AI to predict conversion from early or intermediate non-neovascular AMD to the neovascular form, using quantitative imaging features like drusen shape and volume. 

    The extraction of quantitative fluid features and assessment of retinal multi-layer segmentation from OCT scans have offered valuable insights into disease prognosis and longitudinal dynamics of Diabetic Retinopathy.

    A recent study demonstrated that quantitative improvement in ellipsoid zone integrity following anti-VEGF therapy for DME significantly correlated with visual function recovery. Furthermore, novel imaging biomarkers, such as the retinal fluid index (RFI), are emerging as tools for precisely monitoring treatment response. Studies have shown that early RFI volatility can predict long-term instability in visual outcomes after treatment.

    Building on these advancements, researchers are now exploring the relationship between imaging biomarkers and underlying disease pathways. A recent study linked levels of various cytokines, including VEGF, MCP-1, and IL-6, with specific OCT-derived biomarkers like fluid parameters and outer retinal integrity.

    By automating the analysis of OCT scans, AI not only streamlines the process but also uncovers subtle details and patterns that might be missed by human observation. 

    Enhanced by AI precision enables more accurate identification and quantification of biomarkers, leading to better patient stratification, treatment monitoring, and prediction of therapeutic responses.

    •  Data Annotation for Clinical Trials

    An ophthalmologist’s report noting the presence of edema on an OCT scan is not the same as stating that its height and length are 411 and 3213 µm, accordingly.

    Imaging biomarkers can range from simple measurements of size or shape to complex computational models, providing valuable information to complement traditional diagnostic methods. They can also determine the presence and severity of a disorder, assess its progression, and evaluate treatment response.

    While biomarkers can be derived from various imaging modalities, OCT stands out in ophthalmology due to its high resolution and ability to visualize subtle retinal changes.

    How AI for OCT Revolutionizing clinical research and drug development trials

    Parametric images, which visually represent the spatial distribution of biomarker values, further enhance the analysis of OCT scans. This combination of quantitative data and visual representation empowers clinicians and researchers to make more informed decisions about diagnosis, treatment, and disease management.

    AI for OCT analyzing biomarkers

    Traditionally, medical image interpretation has relied heavily on visual assessment by experts, who recognize patterns and deviations from normal anatomy based on their accumulated knowledge. 

    While semi-quantitative scoring systems offer some level of objectivity, the field is rapidly evolving towards more quantitative and automated approaches. This shift is driven by advancements in standardization, sophisticated image analysis techniques, and the rise of machine and deep learning.

    In some clinical scenarios, automated image quantification can surpass manual assessment in objectivity and accuracy, interpreting subsequent changes with greater precision and clinical relevance by establishing thresholds for disease states. Unlike physical biomaterials, medical images are easily and rapidly shared for analysis, facilitating automated, reproducible, and blinded biomarker extraction.

    This transition to quantitative analysis is particularly evident in the study of AMD. For instance, non-neovascular (dry) AMD has been extensively evaluated using various imaging biomarkers, such as intraretinal hyper-reflective foci, complex drusenoid lesions, subretinal drusenoid deposits, and drusen burden. 

    While SD-OCT has traditionally described these features qualitatively, recent studies have demonstrated the predictive power of quantitative measures like ellipsoid zone integrity, sub-RPE compartment thickness, and automated drusen volume quantification.

    These quantitative biomarkers have shown stronger associations with disease progression than qualitative features, particularly in predicting the development of geographic atrophy. 

    This predictive power of AI extends to diabetic retinopathy as well. In DR, quantitative measures like central subfield retinal thickness and retinal nerve fiber layer thickness have been linked to disease severity. Disruption of retinal inner layers has been associated with worse visual acuity, and its presence is highly specific for macular nonperfusion. Both DRIL and outer retinal disruption are linked to visual acuity in DR and diabetic macular edema.

    Furthermore, morphological signs like hyperreflective foci, representing lipid extravasation and inflammatory cell aggregates, have emerged as potential biomarkers for monitoring inflammatory activity in diabetic eye disease. AI-powered segmentation and quantification of HRF can track changes in response to anti-VEGF and steroid injections.

    • Enrollment of the right patients

    Due to their complexity and scale, clinical trials, particularly Phase III trials, consume a significant portion of the budget required to bring a new drug to the market. However, the success rate for compounds entering clinical trials is dismal, with only about one in ten progressing to FDA approval. This high failure rate stems largely from ineffective patient recruitment, as each clinical trial has unique participant requirements, including eligibility criteria, disease stage, and specific sub-phenotypes. 

    Manual review of electronic medical records is time-consuming and prone to error, as staff must sift through vast amounts of data to identify eligible candidates.

    Infographic source

    AI can automate this process, rapidly analyzing medical imaging and extracting relevant information to determine patient eligibility. This reduces the burden on staff and allows for faster identification and enrollment of suitable participants, streamlining patient selection and ultimately leading to more efficient and successful clinical trials. 

    A targeted approach can dramatically improve recruitment efficiency by pinpointing ideal candidates and even revealing disease hotspots for geographically focused efforts.

    In later phases of clinical trials (Phase II and III), AI-powered image analysis can also play a pivotal role. In ophthalmology, AI can analyze OCT scans to precisely quantify disease biomarkers, ensuring that the trial participants are those most likely to benefit from the investigated drug. This improves the success rate of trials and minimizes potential harm to patients who might not be suitable candidates.

    AI-powered image analysis offers a crucial advantage: reducing variability in interpretation. 

    AI algorithms can standardize the imaging overview process by consistently identifying and quantifying key biomarkers, ensuring that different readers arrive at similar conclusions.

    • Real World Evidence

    Randomized controlled trials have long been the gold standard for evaluating the efficacy and safety of new therapies. However, controlled environments with strict inclusion and exclusion criteria may not fully reflect the diversity and complexity of real-world patient populations. 

    Real-world data (RWD) that is collected during routine clinical practice can provide critical insights into disease biomarkers and significantly impact the drug development process. This RWD can be transformed into real-world evidence (RWE) when appropriately analyzed.

    RWE is bridging the gap between clinical trials and real-world patient care, providing a more representative view of disease progression, treatment patterns, and long-term outcomes in everyday clinical settings.

    In ophthalmology, RWE already has played a crucial role in understanding the impact of anti-VEGF therapies for neovascular age-related macular degeneration. While RCTs demonstrated the initial efficacy of these treatments, RWE studies have shown variations in real-world outcomes and highlighted the need for continued and higher than previously provided treatment frequency and new treatment regimens such as treat-and-extend.

    Big data, encompassing a vast array of structured and unstructured information, is now an integral part of modern medicine, including ophthalmology.  By integrating RWE with traditional clinical trial data, researchers can better understand how a drug performs in the real world and conduct more pragmatic clinical trials designed to evaluate treatments in real-world settings with broader patient populations, ultimately accelerating the development of safer and more effective therapies.

    FDA-cleared AI for OCT analysis

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    The future of ophthalmic drug trials

    The global AI-in-drug discovery market is poised for significant growth, driven by advancements in machine learning, natural language processing, and deep learning.

    Artificial intelligence has the potential to significantly impact drug discovery by enabling more creative and efficient experimentation. It can also reduce the cost and time associated with failures throughout the drug development process. By identifying promising leads earlier and eliminating less viable options, AI can streamline each stage, potentially halving the total cost of a single project. 

    Advanced simulation and modeling techniques powered by AI are also poised to revolutionize our understanding of disease mechanisms and accelerate the discovery of new drugs.

    The promising potential of AI in clinical trials extends to the proactive identification and mitigation of adverse events, enhancing patient safety and reducing trial risks. Data-driven AI tools are poised to revolutionize the entire clinical trial process, from design to execution. By streamlining patient recruitment, continuously monitoring participants, and facilitating comprehensive data analysis, AI can increase trial success rates, improve adherence, and yield more reliable endpoints.

    The future of ophthalmic drug trials is here, and it’s powered by AI. By embracing this technology, researchers and clinicians can unlock new possibilities for preventing blindness and preserving vision for future generations.

  • Optometry Patient Education: Attracting Patients with AI

    optometry patient education
    Maria Znamenska
    26.04.2023
    9 min read

    Optometry Patient Education: Attracting Patients with AI

    Today patients are curious about AI, but they may also have some reservations. Researches suggest a cautious attitude towards autonomous AI in healthcare, but what happens when AI becomes a collaborative tool, assisting eye care professionals in educating and treating patients? This shift in focus can significantly affect patients’ comfort levels and acceptance of AI.

    Patients have some concerns about AI in healthcare. Let’s delve into the patient perspective and discover how addressing these apprehensions and implementing AI-assisted OCT in eye care can lead to a better understanding of the technology and, ultimately, healthier outcomes.

    FDA-cleared AI for OCT analysis

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    Educating Patients about Eye Health

    Interestingly, while surveys extensively document how eye care professionals feel about and interact with AI, the perspectives of the main beneficiary—the patient—remain less understood. The limited research available indicates mixed feelings towards this technology. Few studies examine patient attitudes toward AI in healthcare and eye care, suggesting a degree of caution. 

    Infographic on patient education: 94% of patients want patient education content

    However, these studies have focused on scenarios where AI fully replaces human healthcare providers. Patients demonstrated significant resistance to medical AI in these cases driven mostly by “uniqueness neglect” – concern that AI providers are less able than humans to account for a person’s unique characteristics and circumstances.

    For example,  in the “Resistance to Medical Artificial Intelligence” study, participants demonstrated less interest in using a stress assessment and were willing to pay less for it when administered by an automated system rather than a human, even with equivalent accuracy. Additionally, participants showed a weaker preference for a provider offering clearly superior performance if it was an AI system. 

    A survey of 926 patients reveals a mix of attitudes towards AI in healthcare but also gives us clues to understand the reasons behind it. While a majority believe AI could improve care, there’s also a significant undercurrent of caution:

    • Desire for Transparency: Over 95% of respondents felt it was either very or somewhat important to know if AI played a significant role in their diagnosis or treatment.
    • Unexplainable AI = Uncomfortable: Over 70% expressed discomfort with receiving an accurate diagnosis from an AI system that couldn’t explain its reasoning. This discomfort was more pronounced among those unsure about AI’s overall impact on healthcare.
    • Application Matters: Patients were more comfortable with AI for analyzing chest X-rays than for making cancer diagnoses.
    • Minority Concerns: Respondents from racial and ethnic minority groups expressed higher levels of concern about potential AI downsides, such as misdiagnosis, privacy breaches, reduced clinician interaction, and increased costs.

    These findings highlight the importance of being transparent with patients about how AI is used in their care. Explaining the role of AI and reassuring patients that it’s a tool for assisting your clinical judgment (not replacing it) will be essential. Additionally, being mindful of potential heightened concerns among minority patients is crucial for providing equitable care.

    A study solely focused on overcoming patients’ resistance to AI in healthcare found that demonstrating social proof (like highlighting satisfied customer reviews) increased trust in AI-involved help.

    The team has identified several additional strategies for reducing patient apprehension of AI recommendations. One effective approach is to emphasize AI’s collaborative nature, where a human doctor endorses recommendations. This highlights AI as a tool to assist, not replace, physicians. Demonstrating AI capabilities through real-world examples where AI exhibits nuanced reasoning can also encourage greater reliance on the technology.  

    How to attract patients with AI in eye care

    AI offers a powerful way to transform your practice and set yourself apart. It brings world-class diagnostic expertise directly to your community, potentially saving patients’ sight by catching eye diseases in their earliest stages. Here’s how to position AI for patients:

    • Emphasize Early Detection

    It brings world-class diagnostic expertise directly to your community, potentially saving patients’ sight by catching eye diseases in their earliest stages, including early signs of glaucoma, AMD, and many other pathologies that would often be invisible during a regular visit. Some retinal changes are so microscopic that they elude the human eye, making the program’s ability to detect tiny retinal changes invaluable. This makes AI a powerful tool during routine exams, potentially uncovering issues you may not even have been aware of as a patient.

    • More time for personalized care with optometry patient education

    Patients expect personalized experiences, and AI empowers you to deliver exactly that. By analyzing each patient’s unique OCT image data, AI helps identify potential pathologies with greater accuracy. 

    optometry patient education

    Additionally, since AI acts as a meticulous assistant, double-checking your assessments and minimizing the risk of missed diagnoses, it frees up your time. This allows for more meaningful one-on-one conversations with patients, where you can explain their results and discuss the next steps, setting your practice apart regarding patient satisfaction.

    • Your old good eye care professional, but with superpower

    With AI-assisted OCT, you have the combined knowledge and experience of leading eye care specialists at your fingertips for every patient. This technology leverages massive datasets of medical images and clinical data meticulously analyzed by retinal experts during AI development.  It is a valuable second opinion tool, helping you confirm diagnoses and identify subtle patterns the human eye might miss.

    AI-assisted OCT in eye care: кetina specialists of Altris AI segmenting pathologies to teach AI detect them

    This offers your patients peace of mind – knowing their diagnosis has been informed by insights from a team of experts incorporated into the AI’s analysis.

    It’s crucial to emphasize that AI will never replace the human touch. It’s a powerful tool that frees up your time for what matters most: building trust through personalized care and addressing patient concerns with empathy.

    How to explain what AI is to patients 

    AI color coding in eye care, segmented by pixels pathologies on OCT

    Patient understanding is vital for building trust with you and any technology you use. It is especially important when talking about a sophisticated instrument like AI. In case of AI, which remains a mystery to many,  patient education in optometry is a must.

    For instance, we’ve found that patients sometimes struggle to understand how Altris AI, our AI-powered OCT analysis tool, works. We’ve crafted an explanation that helps them grasp the concept more quickly, covering how retinal specialists have taught the system to do its job, the AI’s role as a doctor’s help, and direct benefits for patients.

    OCT scans provide incredibly detailed images of the retina, the important layer at the back of your eye.  Eye doctors carefully analyze these scans to spot any potential problems.  To make this process even more thorough, AI systems are now being used to assist with OCT analysis.

    optometry patient education

    How does the system know how to do that? Real doctors have taught it. It works by first learning from thousands of OCT scans graphically labeled by experienced eye doctors. 

    The doctors analyzed images from real patients to detect and accurately measure over 70 pathologies and signs of pathology, including age-related macular degeneration and glaucoma, teaching the AI what to look for.

    The system leverages a massive dataset of thousands of OCT scans collected from 11 ophthalmic clinics over the years. Carefully segmented and labeled by retinal professionals, these scans were used to train the AI. By analyzing each pixel of an image and its position relative to others, the AI has learned to distinguish between different biomarkers and pathologies.

    The platform visualizes what is going on with the retina using color coding. This means that every problem on the OCT scan will be colored differently and signed so you will be able to understand what is going on with your retina.

    Biomarkers detected by Altris AI on OCT

    As with any innovative tool, Altris AI partially automates some routine tasks, so clinicians have more time for what is important: talking to patients, learning more about their eye health, and providing treatment advice.

    Why does this matter to you? Altris AI can help spot even the tiniest changes in your eyes, leading to earlier treatment and better protection of your eye health. Knowing a smart computer system is also double-checking your scans gives both you and your doctor extra confidence in the results.

    With the help of Altris AI, you will be able to see how the treatment affects you.  For example, if you have fluid in the retina (that is not supposed to be there), you will be able to see if its volume is decreasing or increasing with the help of color coding. 

    Detected by AI for OCT, Altris AI, biomarkers of Fibrovascular RPE Detachment on OCT scan: RPE disruption, Fibrovascular RPE Detachment , Subretinal fluid, Ellipsoid zone disruption

    Altris AI was designed by eye doctors for eye doctors. It’s a tool to help us take even better care of patients.

    AI color coding in eye care: how learning about diagnosis influences treatment adherence

    Patient-centered care, a key principle outlined by the Institute of Medicine, emphasizes optometry patient education and involvement in decision-making. This is vital in ophthalmology, where insufficient patient engagement can lead to irreversible blindness.

    Research specifically targeting the ophthalmology patient population, which often includes older and potentially visually impaired individuals, reveals a clear preference for individualized education sessions and materials endorsed by their eye care provider. 

    According to Wolters Kluwer Health, patients crave educational materials from their providers, yet only two-thirds actually get them. This leaves patients searching for information, potentially exposing them to unreliable sources. 

    Providing clear, accessible patient education is crucial to ensure understanding and treatment adherence. 

    The human brain’s ability to process visual information far surpasses its speed with text, making visual aids a powerful tool for health education. In the field of eye care, this becomes even more critical. Patients often experience vision difficulties, potentially hindering their ability to absorb written materials. Providing clear visual representations of diagnoses can significantly improve patient understanding and compliance. 

    A study shows a strong preference for personalized educational materials, especially among older visually impaired patients. Seeing photos of their condition, like glaucoma progression, builds trust and reinforces the importance of treatment recommendations.

    Surveying eye care professionals specializing in dry eye disease revealed a strong emphasis on visual aids during patient education. Photodocumentation is a favored tool for demonstrating the condition to asymptomatic patients, tracking progress, and highlighting the positive outcomes of treatment.

    A visual approach is particularly motivating for patients. It provides tangible evidence of the benefits of their treatment investment, allowing for a deeper understanding of the “why” behind treatment recommendations and paving the way for ongoing collaboration with the patient.

    Understanding complex eye conditions can be challenging for patients. Altris AI aims to bridge this gap by using color coding for pathologies and their signs, severity grading, and pathology progression over time within its OCT analysis.

    With Altris AI, scans are color-coded for instant interpretation: all the detected pathologies are painted in different colors, highlighting the littlest bits that the unprepared eye of a patient would miss otherwise.

    AI in eye care: patient education through doctor explanation to patient color coded OCT scan, segmented by Altris AI, AI for OCT

    This easy-to-understand visual system empowers patients. They can clearly see what’s happening within their eyes and track the progress of any conditions during treatment.

    Eye care professionals are enthusiastic about its impact.

    optometry patient education

    The power of visuals goes beyond understanding a diagnosis. When patients see the interconnected structures that make up their vision, they gain a deeper appreciation for its complexity and the importance of preventative care. This understanding fosters a true partnership between doctor and patient, where the patient is an active, informed participant in their own eye health.

    Summing up: Educating Patients about Eye Health

    FDA-cleared AI for OCT analysis

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    Patient education in optometry is vital today and AI is the perfect tool for that. Patients are increasingly curious and open to AI’s potential in general healthcare and eye care in particular, but naturally, some questions and hesitation remain. They stem from a desire to ensure AI considers their individual needs. By addressing these concerns proactively and clarifying when and how AI is used in their care, emphasize the collaborative doctor-AI model—highlight that YOU review and endorse all AI recommendations.

    You can successfully integrate this powerful technology into your practice by addressing patient concerns with empathy and highlighting AI’s benefits. This leads to better patient education in optometry and empowered patient experience, improving understanding, adherence to treatment, and, ultimately, better health outcomes.

     

     

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  • will optometrists be replaced by ai

    Will Artificial Intelligence Replace Ophthalmologists & Optometrists?

    Maria Znamenska
    17.11.2022
    8 min read

    Will optometrists be replaced by AI?

    Back in 2019, at the World Science Congress, Peter van Wijngaarden, Deputy Director of the Center for Eye Research, claimed that the eye sector is one of the leading areas of medicine in terms of artificial intelligence (AI) implementation. According to RANZCO, AI systems are already achieving incredible results and, in some cases, can even rival eye care specialists.

    Since AI has become a buzzword, there are hundreds of articles, speeches, and videos on this topic. We are the company that created AI for the eye care and we know the answer to this question: ” Will AI take over optometry and ophthalmology?” ( Spoiler: NO).

    Try a co-pilot AI for OCT analysis ( but it won't replace you)

    It is simple a misconception. There are a lot of similar examples of AI misconceptions when famous professors and specialists in the field of ophthalmology made predictions that artificial intelligence is rapidly gaining strength in the eyecare industry. This gives rise to many myths and fears around the introduction of AI in clinical practice. Will optometrists be replaced by AI? What about ophthalmologists? What is going on?

    The increased attention to the issue of optometrists and ophthalmologists replaced by AI was also provoked by a World Economic Forum (WEF) report. According to this report, people can lose 85 million jobs by 2025 due to the shifting division of labor between people and machines.

    In this post, we will discuss the top 5 AI misconceptions that are most often faced by the owners of ophthalmological clinics and optometry centers in order to dispel them once and for all.

    What exactly is AI? Do AI algorithms work exactly like a human brain?

    artificial intelligence replace ophthalmologists

    The concept of optometrists and ophthalmologists replaced by robots is gaining popularity. Nowadays, eye care specialists often discuss the potential of AI training in human cognitive skills. It is no longer just about the ability of AI to detect Diabetic retinopathy or interpret OCT scans with greater accuracy. The question is, will AI ever be able to replicate human consciousness? And can AI replicate how the human brain works?

    What do we know about such models in different areas? AI systems are already demonstrating the work of some human cognitive functions. For example, AI models successfully compete with humans in computer games by gradually learning successful strategies. There is also an AI ​​model which creates enjoyable melodic music.

    However, replacing optometrists and ophthalmologists with AI still seems  VERY unrealistic. Even with the above examples mimicking some aspects of human behavior, an AI algorithm still needs to learn what empathy is. Artificial intelligence does not understand and cannot make sense of its surroundings, nor can it learn from its surroundings as humans do. The most famous example that confirms this inability of AI is Siri or Alexa. Voice assistants can set up appointments but give strange answers when the conversation goes differently than their scenario.

    While the human brain inspires modern AI techniques such as neural networks (NNs), the structure of NNs architectures is not biologically realistic. 

    First of all, there is a set of qualities that ophthalmologists and optometrists use every day. It is empathy for the patient, as well as creativity, teamwork, and adaptability. These qualities help doctors provide effective care to their patients. It is unlikely that the machines will ever be able to work with children, older adults, or patients with specific disabilities on par with humans. In addition, any patient would like to hear the diagnosis or discuss a treatment plan with a doctor, not a machine. 

    Therefore AI algorithm can’t work like a human brain, and the scenario where artificial intelligence replace ophthalmologists and optometrists will never happen. Nowadays, there are no developments that would make us think that AI image interpretation will ever be able at least to repeat important qualities of eye care specialists.

    Is today’s state of AI dangerous for humans?

    artificial intelligence replace ophthalmologists

    Today, AI algorithms can interpret retinal images and distinguish pathological from non-pathological scans. However, not all attempts at AI implementation have succeeded as well. One of the most popular non-medical examples is Facebook. Some time ago, Facebook tried to identify relevant news for certain groups of users. But the automated process could not detect the difference between real and fake news. Russian hackers managed to trick the system and bypass automatic filters. They posted fake news, forcing the Facebook team to come back to human editors.

    This is just one example of how security lags behind performance when humans rely on AI too much. Artificial intelligence is a great tool, but in most cases, its abilities only give reliable and the most accurate results in collaboration with eye care professionals. Although machines are designed by humans, they often can’t predict human behavior and don’t know how to cope with situations or clinical cases that go beyond the scope of the algorithm.

    Therefore AI is not dangerous for humans when ophthalmologists and optometrists periodically control the work of algorithms and review how the machine works. This is the number-two reason why artificial intelligence replace ophthalmologists and optometrists is unrealistic.

    Will AI ever be 100% objective?

    artificial intelligence replace ophthalmologists

    To honestly answer the questions of will artificial intelligence replace ophthalmologists and optometrists and whether it is 100% objective, you need to understand that an AI system will only be as good as its inputs. By loading unbiased training datasets, engineers can create an AI system that makes unbiased decisions. However, in the real world, AI is unlikely ever to be 100% objective. 

    For example, many well-known companies, such as Amazon or Facebook, still struggle with the gender gap in hiring. Some time ago, Amazon used historical data from the past ten years to train its AI recruiting model. The algorithm was supposed to process data and candidates and free recruiters from the routine viewing of hundreds of CVs. However, soon Amazon team discovered that the data was biased against women. AI algorithm was trained by outdated information when the technology industry used to be dominated by men. Thus, the new recruitment system selected only male candidates. This forced Amazon to abandon the algorithm and re-open many recruiter positions.

    In the field of ophthalmology, AI models can already accurately predict diabetes risk factors or potential vision loss from OCT images. So when will artificial intelligence replace ophthalmologists? In Altris, we are sure the algorithm will never achieve adequate objectivity, as it will always be limited by input data, whether demographics, gender, or age. 

    Now we know that AI can’t be 100% objective. Indeed, ophthalmologists and optometrists can’t match the ability of algorithms to detect pixel-level patterns among the millions of pixels in the OCT scan. However, only the cooperation of eye care specialists and a quality AI model working together will allow for more accurate detection of diseases. The combined efforts of AI management systems and eye care specialists can help achieve the desired 100%.

    Will optometrists be replaced by AI?What about ophthalmologists?

    artificial intelligence replace ophthalmologists

    Various articles have speculated on whether artificial intelligence replace ophthalmologists and optometrists, raising concerns about unemployment. However, this never corresponded to the actual state of affairs. Carl Benedikt Frey, an Oxford Martin Citi Fellow at Oxford University, reported that while 47% of jobs are at risk of automation, the risk for doctors is estimated at only 0.4%.

    In addition, in his book “Humans Are Underrated”, Geoff Colvin states that the most valuable skill for ophthalmologists is the ability to sense the thoughts and feelings of patients who are losing sight.

    Many patients complain about the lack of contact with the doctor. They admit that the treatment would be more comfortable if doctors devoted more time to live communication. This mainly applies to children and the elderly, who need a lot of attention from eye care specialists. Empathy and similar human qualities are not only an understanding of the patient’s feelings but also an adequate response to them. Thus, a future in which optometrists and ophthalmologists are replaced by AI seems senseless.

    Professor Tien Yin Wong, medical director of the Singapore National Eye Centre, claimed that AI holds great promise for retinal screening. And while AI for OCT interpretation will radically change clinical practice, the technology’s more significant impact will be to complement and enhance human capabilities rather than replace them. The field of ophthalmology demonstrates that the combined efforts of scientists and machines are more effective than either could achieve individually. 

    Artificial intelligence for OCT interpretation is just a recommendation system for an eye care specialist. Often one pathological sign, for example, Cystoid macular edema (CME), or Intraretinal fluid, can indicate many diseases, like Wet AMD, DR, DME, CRVO, and others. That is why AI is only an assistant to a doctor, especially when it comes to rare pathologies.

    All in all, AI for OCT interpretation is just a tiny part of clinical practice and can never work without humans. In order to detect the pathological signs and diagnose a disease correctly, an eye care specialist must perform different examination methods. Among these exams are visual acuity, intraocular pressure, ophthalmoscopy, and a basic patient examination, which includes anamnesis. Moreover, ophthalmologists and optometrists may also need to perform other visualization methods, like Fundus photography, FFA, or OCTA.

    Will AI replace optometrist?

    This is probably one of the key AI misconceptions. Automation has led to a significant change in many industries, and ophthalmology is no exception. So when will AI take over optometry and ophthalmology?  The answer is quite simple — AI will never replace eye care specialists. It will eventually take over routine tasks, allowing the careers of ophthalmologists and optometrists to advance in new and exciting directions.

    Try a co-pilot AI for OCT analysis ( but it won't replace you)

    Automated interpretation of OCT scans will significantly increase the circulation of patients in ophthalmic clinics or optometry centers, which is commercially attractive. Moreover, with increasing life expectancy, and expanding the range and effectiveness of treatment options offered, a collaborative effort between ophthalmologists and AI will improve patient outcomes. This will make ECPs more efficient, freeing up time for human interaction between doctor and patient, which has been a cornerstone of medicine for decades.

    There are hundreds of eye care specialists who are already using AIf for OCT scan analysis, for example, to improve! the results. So will AI take over optometry or ophthalmology? The answer is rather simple: No

    will ai take over optometry

  • AI for Reading Centers: AI medical image analysis

    AI for Reading Centers: How it Boosts Workflow and Efficiency

    Mark Braddon
    05.10.2022
    7 min read

    In recent years reading centers have become an essential resource for facilitating imaging research in many fields, including clinical trials of ophthalmology drugs. And their importance will continue to grow

    Reading centers provide crucial information by evaluating images. That is why for conducting accurate clinical trials, they must hire ophthalmologists of high qualification. Moreover, to ensure consistent analysis, the materials that graders use for the research (be it fundus photographs, fluorescein angiograms, or OCT scans) must also undergo quality control. However, even such measures can’t completely exclude errors or biases.

    Meanwhile, recent developments in the field of AI medical image analysis revolutionized the approach to clinical trials, which makes it possible to boost the workflow of reading centers. AI image analysis software works with thousands of images, efficiently providing the large amount of data needed to analyze the patient’s condition. In addition, evaluating images with AI is faster, cheaper, and more effective

    Book demo for a company

    Try artificial intelligence for OCT analysis

    In this article, we will discuss the top 5 benefits of AI medical image analysis software for reading centers and the way AI improves the image interpretation process.

    Limitations of the manual evaluating procedure

    Although several reading centers have already implemented AI for medical image analysis in their workflow, most organizations are far from evaluating automation and prefer classic image interpretation methods.

    AI medical image analysis

    In most reading centers, ophthalmologists manually evaluate ocular images for drug safety studies, compile the images, and perform statistical analysis of the data. Research sizes for reading centers can range from 50 images to 3000 or more, and dozen of separate sets of images can be collected per research subject. Therefore reading centers have many obstacles to a quality evaluation process and accurate results.

    • Large amount of images is hard to proceed

    The vast number of images that need to be processed in the short term usually leads to the main problem for reading centers — most hire outsourced ophthalmologists to speed up the image grading and evaluation process. Outsourced specialists have different levels of qualification and different evaluating methods, which may lead to decreased accuracy. In addition, outsourced eye care specialists are not always interested in performing the work at the highest level. 

    • Human resources are expensive

    Another limitation of the standard evaluating procedure is the high сost spent on ophthalmologists. Human resources are usually quite expensive and associated with the risk of staff turnover. 

    • High probability of human bias

    Besides, hours spent in front of a computer screen evaluating thousands of images create a stressful environment for ophthalmologists and cause many errors, affecting the accuracy of the clinical trials. Even the FDA recognizes grader fatigue and its impact on potential errors in image interpretation. 

    • Inaccurate labeling

    In addition, administrative problems also occur quite often. This happens due to deviations from study protocols and incorrect labeling of images, which can compromise the integrity of the analyses.

    Fortunately, the pace of digitalization in reading centers is accelerating. Here is how AI medical image analysis can help reading centers cope with the growing workload. 

    The importance of implementing AI medical image analysis for reading centers

    Usually, AI image analysis is made through a pattern recognition process that involves scanning images for specific pathological signs to interpret the patient’s condition. The AI image analysis software has precise and efficient evaluation protocols that allow the analysis and interpretation of images in terms of a variety of qualitative morphological parameters. For example, when analyzing images of a patient with diabetic retinopathy, the AI models recognize microaneurysms or hemorrhages.

    AI medical image analysis

    AI algorithms allow reading centers to conduct trials of any size and duration, including various treatments for various eye diseases. Moreover, unlike the standard image interpretation process, which requires significant human resources, the introduction of AI for image analysis into the workflow of reading centers has many advantages. 

    • Quality control. Using AI algorithms ensures no errors in OCT scan analysis. AI image analysis software ensures that the desired parameters are classified based on certified imaging protocols.
    • Less money spent. Implementing AI-assisted OCT analysis is less expensive than hiring outsourced ophthalmologists. 
    • Accurate quantification. AI in medical image analysis does not depend on patient characteristics or treatment group assignment knowledge, so the machine provides the most objective and accurate assessment possible.
    • Increased efficiency. Improving the reading centers workflow with AI provides an objective and standardized classification of images. It means that any human bias is excluded, which increases the reputation of clinical research.
    • No time wasted — no more hours spent at a computer screen. Evaluating images with AI medical image analysis provides faster and more sensitive identification of the patient’s condition, which can positively impact decision-making.
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    Try artificial intelligence for OCT analysis

     

    How reading centers will benefit from AI image analysis software

    In short, image evaluation with algorithms is fast, less expensive, and more reproducible. However, many companies that perform clinical trials in cooperation with reading centers are still afraid of implementing AI in medical image analysis and evaluating processes. Modern AI-based image management systems, such as Altris AI, unlike their predecessors, allow reading centers to overcome the challenges of the manual image interpretation process.

    A lot of data available to train an algorithm 

    The more images with various pathological features the algorithm has for training, the more accurately it will detect the diagnosis. Modern AI image analysis software has the ability to obtain thousands of OCT images from different models of devices for comprehensive and correct training of algorithms. Although many medical centers keep their clinical practice confidential, many ophthalmic cases and images with various pathological signs in the public domain allow the training of AI algorithms.  

    For example, the Altris AI medical image analysis software was trained on 5 million unique OCT scans obtained in 11 practicing ophthalmology clinics through the years. Our retina experts took a responsible approach to annotating and labeling images for algorithm training. A thorough error detection and correction procedure gave our algorithm 91% accuracy. 

    Constant quality control

    The responsibilities of the modern algorithms developers include not only the release of the model but also further diagnostics, which allows avoiding the problem of reproducibility. After all, constant quality control is necessary for algorithm development environments. Understanding the importance of quality control, the Altris AI team constantly tests the reproducibility of AI medical image analysis model diagnostics.

    Collection of rare diseases

    According to our research, ​25% of ophthalmologists, on average, miss rare pathologies 3 times a week.​ However, modern AI image analysis software allows overcoming this challenge. For example, Altris AI excludes missing minor, early, rare pathologies. Our team created an algorithm that automates the detection of 54 pathological signs and 49 pathologies.

    High percentage of algorithmic bias is avoided

    Algorithmic bias is one of the biggest challenges in AI. Although algorithms themselves do not have biases, they inherit them from humans. However, today, AI for image analysis has learned how to overcome the lack of interoperability between medical record systems. 

    Although it is impossible to avoid algorithmic bias completely, as it can appear at any stage of the algorithm creation process, from study design and data collection to algorithm development and model selection, modern developers take a direction to fair AI. By using a technical and regulatory framework that provides the diverse data needed to train AI algorithms, the Altris AI team makes modern technologies inclusive and ensures algorithmic bias can be excluded.

    The future of AI medical image analysis in reading centers

    The ultimate goal of the ophthalmic AI system for reading centers is to improve the grading and evaluating process and obtain more accurate research results. However, instead of fully digitalizing image assessment, the ideal approach to analysis is integration — where the benefits of AI algorithms and human skills can be combined.

    Technology will never fully replace humans, but it is already improving their work efficiency. For example, by taking over more routine and monotonous tasks, algorithms allow ophthalmologists to focus on specific eye areas and increase the evaluation speed. AI medical image analysis software can also be effective in determining compliance with the standardization of feature interpretation and determining image quality for requesting more images. 

    There are undoubtedly many challenges to integrating AI for image analysis into the workflow of reading centers. However, modern AI technologies can already overcome almost all of them. Altris AI image interpretation system is changing the future of clinical research by helping to classify images faster and increasing the efficiency, accuracy, and reproducibility of clinical trial data.

    You can watch a short video of how Altris AI platform assists eye care specialists in detecting pathological signs on the OCT scans:

  • The use of AI for image analysis

    The Role of AI Image Interpretation for Ocular Pathologies Detection

    Maria Znamenska
    28.09.2022
    20 min read

    The burden of timely diagnostics lies on the shoulders of eye care specialists: ophthalmologists and optometrists worldwide. According to the International Agency for the Prevention of Blindness, over 1 billion people live with preventable blindness because they can’t access the proper diagnostics and treatment. Almost everyone needs access to eye care services during their lifetime. Unfortunately, there are only 331K optometrists worldwide, while 14M optometrists are required to provide effective and adequate eye care services. 

    With the high prevalence of the population that needs eye care services and the lack of specialists, the goal of timely and accurate diagnostics and treatment seems unachievable. 

    See how AI for OCT works

    However, the empowerment of eye care specialists with Artificial Intelligence (AI) can be a real solution to this problem. As the larger part of the work of eye care specialists relies on retina image assessment and analysis, the support of this process can unburden ophthalmologists and optometrists all over the world. Modern AI image interpretation algorithms, such as Altris AI, can discover patterns among millions of pixels with high speed, accuracy, and zero human errors because of tiredness. 

    You can watch a short video of how Altris AI can assist you in detecting pathological signs on the OCT scans:

    https://www.youtube.com/watch?v=Ehhwl6Q0O-A&ab_channel=Altris

    In this article, we will talk about the capabilities of AI image interpretation for Optical Coherence Tomography (OCT) in detecting common pathologies, such as AMD or glaucoma, and less prevalent, such as Choroidal Melanoma. Despite the skepticism of the eye care community towards AI, multiple research works mentioned in this article prove the efficiency of AI. Moreover, there are market tools, capable of detecting 49 eye pathologies with 91% accumulative accuracy. Altris, the SaaS created by a team of retina experts based on 5 million OCT scans obtained in 11 clinics, is such a tool. 

     

    AI image interpretation for OCT

     

    AI image interpretation for Asteroid Hyalosis

    Asteroid hyalosis is a clinical condition in which calcium-lipid complexes are suspended throughout the vitreous collagen fibrils. Although it is a rare disease (​​1.2% prevalence according to the U.S. Beaver Dam Eye Study), it also may lead to unpleasant consequences, such as surface calcifications of intraocular lenses. Today OCT can help with the detection of this degenerative condition. For a higher confidence level, eye care specialists may use Altris AI image interpretation for OCT analysis to detect asteroid hyalosis.

    AI for Central Retinal Artery Occlusion (CRAO)

    Central Retinal Artery Occlusion (CRAO) presents as unilateral, acute, persistent, painless vision loss. It can be bilateral in 2% of the population. The vision loss is abrupt, and the treatment is only effective during the first hours. CRAO resembles a cerebral stroke. Therefore, its treatment should be similar to any acute event treatment: detecting the occlusion site and ensuring it won’t occur again. AI image interpretation models, such as Altris AI, can assist eye care specialists in detecting CRAO today. 

    AI for Central Retinal Vein Occlusion (RVO)

    AI image interpretation

    CRVO is one of the most widespread vascular diseases that affect the population over 45. There are two distinct types of CRVO: perfused (nonischemic) and nonperfused (ischemic). Each of these types has its symptoms and treatment prognosis. For instance, ischemic CRVO leads to sudden visual impairment, while nonischemic CRVO development takes time to develop mildly. The detection of CRVO is now done with the help of OCT predominately, and AI image interpretation systems shows promising results in spotting its symptoms, such as nonperfusion. Altris AI system defines CRVO with 91+% accumulative accuracy in detecting pathological signs that indicate the CRVO.

    AI for Central Serous Chorioretinopathy (CSC)

    Accumulation of fluid under the central retina is called central serous chorioretinopathy. Over time, this disease can lead to the distortion of vision. Fortunately, available AI models for OCT scan analysis show high accuracy in detecting CSC. This and other AI image interpretation models effectively discriminate between acute and chronic CSC, and their performance can be comparable to the performance of ophthalmologists. Altris AI is already helping eye care specialists worldwide to diagnose CSC cases.

    Try Altris AI for free

    Check how artificial intelligence assists in OCT interpretation

     

    AI for Chorioretinal Scar

    Chorioretinal scars are tiny scars in the back of the eye, the size of which may vary from 0,5mm to 2mm. In most cases, the chorioretinal scar appears as the result of virus infection, such as toxoplasmosis and toxocariasis, or trauma. It usually has no malignant potential. Modern AI image interpretation algorithms allow ophthalmologists and optometrists to diagnose chorioretinal scars more accurately by relying on OCT images.

    AI image interpretation for Chorioretinitis

    The inflammation of the choroid is called chorioretinitis. Often, the inflammatory process can be caused by congenital viral, bacterial, or protozoan infections. Chorioretinitis is characterized by vitreous haze, fine punctate gray to yellow exudation areas, pigment accumulation along the optic nerve and blood vessels, and flame-shaped hemorrhages with chorioretinal edema. The goal of the eye care specialist is to detect chorioretinitis which can potentially lead to blindness, and to eliminate inflammation. Altris AI image interpretation system can be an excellent decision-making support tool in detecting chorioretinitis.

    AI image interpretation for Choroidal Melanoma

    Today, choroidal melanoma is the second most common intraocular tumor in the adult population. Patients with choroidal melanoma don’t have distinct symptoms but can have impaired visual acuity, visual field defects (scotomas), metamorphopsia, photopsia, and floaters.

    OCT is a relatively new method for the detection of choroidal melanoma, which is nevertheless gaining popularity. OCT cannot be the only diagnostic method for melanoma detection – FA is also needed for final diagnosis. However, optical shadowing, thinning of overlying choriocapillaris, subretinal fluid, retina local elevation, subretinal lipofuscin deposits, and disrupted photoreceptors can be detected with the help of OCT.

    Such pathological signs will indicate possible choroidal melanoma. Altris AI image interpretation system can assist eye care specialists with detecting pathological b-scans and locating this disease.

    AI for Choroidal Neovascularization (CNV)

    AI image interpretation

    Choroidal neovascularization (CNV) is part of the spectrum of exudative age-related macular degeneration (AMD) and some other conditions. CNV is an abnormal growth of vessels from the choroidal vasculature to the neurosensory retina through Bruch’s membrane.

    Modern OCT systems can detect even a tiny amount of fluid leaking into the retina. Empowered by Altris AI image interpretation algorithm, eye care specialists can spot pathological signs of choroidal neovascularization much faster or detect the pathologies that accompany CNV, resulting in better patient outcomes.

    AI image interpretation for Choroidal Rupture

    Traumatic choroidal rupture is common after blunt ocular trauma (5 to 10%). It is a defect in the Bruch membrane, the choroid, and the retinal pigment epithelium. The location of the choroidal rupture will define the symptoms: if the fovea and parafoveal retina are included in the rupture area, patients experience impaired vision. In other cases, the rupture can be asymptomatic. OCT is used to diagnose choroidal rupture as it can show the loss of continuity of the RPE layer and the thinning of the choroid. AI image interpretation is exceptionally accurate in layers segmentation and volume/area calculation, so missing the symptom of choroidal rupture with AI is almost impossible.

    AI image interpretation for Choroidal Nevus

    AI image interpretation

    Choroidal nevus is a benign melanocytic tumor of the choroid and is found in 5 to 30% of white people. It can be found accidentally because it is asymptomatic. Artificial intelligence methods are used not only for identifying choroidal nevus but also for early signs of its transformation into malignant melanoma. The earlier the small melanoma is detected, the better the treatment prognosis is for the patient. Altris AI image interpretation system is one of the systems capable of detecting choroidal nevus before its transformation into melanoma. 

    AI for Cone-Rod Dystrophy (CORD)

    CORD is an inherited retinal disease caused by a genetic mutation characterized by cone photoreceptor degeneration. It may be followed by subsequent rod photoreceptor loss. CORD symptoms include loss of central vision, photophobia, and progressive loss of colored vision. OCT diagnostics help to diagnose CORD by pointing at the absent interdigitation zone and progressive disruption and loss of the ellipsoid zone (EZ). Today AI image interpretation is helping to detect Cone-Rod Dystropthy to eye care specialists more confidently, even in controversial cases.

    AI for Cystoid Macular Edema (СME)

    AI image interpretation

    Cystoid macular edema (CME) is a painless condition in which cystic swelling or thickening occurs of the central retina (macula) and is usually associated with blurred or distorted vision. CME can be caused by many factors, including diabetic retinopathy and age-related macular degeneration (AMD). OCT diagnostics help to spot СME by detecting retinal thickening with the depiction of the intraretinal cystic areas. CME is not irreversible. Vision loss caused by macular edema can be reversed if detected early. Combining OCT diagnostics with AI image interpretation, eye care specialists can detect CME with higher accuracy at an earlier stage.

    AI image interpretation for Degenerative Myopia

    AI image interpretation

    Degenerative or pathological myopia is the condition during which axial lengthening occurs, especially in the posterior pole. It leads to retina stretching, the sclera’s thinning, choroidal degeneration, and potential loss of vision. AI image interpretation systems have demonstrated excellent results in detecting pathologic myopia and identifying myopia-associated complications on OCT. AI helps ophthalmologists improve the monitoring of pathology treatment and classify different cases of myopia.

    AI for Diabetic Macular Edema

    ​​Diabetic macular edema (DME) is the presence of excess fluid in the extracellular space within the retina in the macular area, typically in the inner nuclear, outer plexiform, Henle’s fiber layer, and subretinal space. DME can develop during any stage of diabetic retinopathy in patients with diabetes.

    Unfortunately, the early symptoms of DME can be unnoticeable or include impaired vision and reading and color perception problems, which some people may ignore. Taking into account its asymptomatic nature, patients with diabetes need regular OCT examinations to determine the presence of DME. OCT has become a golden standard in DME detection within the last few years, and AI can be an excellent decision-making support tool in OCT scans interpretation. According to recent research, AI-powered OCT analysis provides an accurate diagnosis of DME with a cumulative accuracy of over 92%. 

    AI image interpretation systems can unburden ophthalmologists and optometrists who have a lot of patients due to their convenience and can be used in remote regions of the world in the future.

    AI image interpretation for Diabetic Retinopathy

    AI image interpretation

    Diabetes can affect the eyes in various ways, most commonly corneal abnormalities, glaucoma, iris neovascularization, cataracts, and neuropathies. However, diabetic retinopathy (DR) is the most common and potentially the most blinding of these complications. Early treatment of both proliferative and non-proliferative DR can improve patient outcomes significantly. OCT is a common diagnostic method for diabetic retinopathy. It relies on the localization of intraretinal and/or subretinal fluid and can help to diagnose diabetic retinopathy through pathological signs detection and layer thickness measurement. 

    AI image interpretation is a step in the future of detection that shows high sensitivity in identifying DR, and studies prove its effectiveness. AI-assisted analysis of OCT scans helps eye care specialists today and will definitely be more widespread tomorrow.

    AI image interpretation for Dry AMD

    Dry AMD is a more common type of AMD (80% of people have this type), during which patients slowly lose their central vision. It is the aging of the macula and the appearance of deposits called drusen. There is no treatment for Dry AMD yet. However, early detection can help patients to change their lifestyles and slow down the development of this disease. Modern AI solutions make it possible to diagnose Dry AMD faster and develop successful methods of treating the disease. AI image interpretation systems also exclude the possibility of human error.

    AI for Dry AMD – Geographic Atrophy

    Geographic atrophy is an advanced form of the late stage of Dry AMD development. In this condition, retina cells will degenerate and finally die, leading to the patient’s central vision loss.

    AI image interpretation is being widely used to detect Geographic Atrophy with the help of OCT. In this meta research, there are numerous studies that focus on lesion segmentation, detection, and classification of geographic atrophy and even its prediction. They vary in accuracy, but the overall trend of AI for geographic atrophy detection is very positive. The use of artificial intelligence has several advantages, including improved diagnostic accuracy and higher processing speed. 

    AI for ERM or Epiretinal Fibrosis

    AI image interpretation

    Epiretinal fibrosis (epiretinal membrane or macular puckering) is a treatable cause of visual impairment. It is a macula disease caused by fibrous tissue growth on the retina surface. AI image interpretation model for detecting ERM on OCT can outperform non-retinal eye care specialists with a cumulative accuracy of 98+%. For more professional retina experts, AI can be a decision-support tool. Early detection and treatment of this disease are crucial to prevent the ​​growth of fibrous tissue and the worsening of the patient’s condition.

    AI image interpretation for Epiretinal Hemorrhage

    Epiretinal hemorrhages result from a serious trauma: car or sports accidents, falls, and direct physical impact. Mild hemorrhages unrelated to a serious traumatic event can disappear on their own, but they can be a symptom of a more complex pathology. Epiretinal hemorrhages can be detected with the help of OCT, and AI image interpretation systems can make this process more accurate.

    AI for MTM (Foveoschisis)

    Myopic foveoschisis or myopic traction maculopathy is the thickening of the retina that reminds schisis in patients with high myopia with posterior staphyloma.

    Untreated foveoschisis often leads to vision loss due to secondary complications, which is why this disease should be detected in time. Today when OCT is becoming more widespread, detection of foveoschisis is more common and accurate. More than that, the studies show that combining the power of AI image interpretation and OCT diagnostics for MTM detection is equal to the junior ophthalmologist’s knowledge. Using AI-powered OCT, it is possible to deal with the shortage of specialists that can guarantee timely diagnostics.

    AI for Full-thickness Macular Hole

    AI image interpretation

    A macular hole is a full-thickness defect of the retina involving the foveal region. Patients usually present a reduction of central visual acuity. A complete ophthalmic examination, including OCT, should be performed to diagnose a full-thickness macular hole. So far, the research of AI image interpretation algorithms for a full-thickness macular hole is dedicated to OCT(A), but there are available tools on the market that can help define full-thickness macular hole on OCT scans as well. Altris AI is one of them.

    AI for Hypertensive Retinopathy

    People with high blood pressure, older people, and patients with diabetes often develop hypertensive retinopathy. OCT examination can be used for the detection of hypertensive retinopathy.

    AI-based OCT analysis shows promising results in detecting hypertensive retinopathy by defining retinal vessels and other pathological signs in the retina.

    AI for Intraretinal Hemorrhage

    AI image interpretation

    Among patients with DR, RVO, or ocular ischemic syndrome, there are often those who develop side pathologies. One of these pathologies is intraretinal hemorrhage. AI image interpretation systems help ophthalmologists and optometrists identify intraretinal hemorrhages in the retina.

    AI image interpretation for Vitreous Hemorrhage

    Vitreous hemorrhage results from bleeding into one of the several potential spaces formed around and within the vitreous body. This condition can follow injuries to the retina and uveal tract and their associated vascular structures. Eye care specialists should perform a complete eye examination, including OCT, slit lamp examination, intraocular pressure measurement, and dilated fundus evaluation. Timely diagnosis and treatment are essential: it can significantly reduce concomitant diseases of intravitreal hemorrhage. AI image interpretation systems can help eye care specialists detect vitreous hemorrhage supporting them in case of controversial OCT scans.

    AI for Lamellar Macular Hole (LMH)

    AI image interpretation

    Lamellar macular hole is one of the types of macular holes known in eye care practice. The problem is that the stage 0 macular hole is a clinically silent finding detected on OCT where a parafoveal posterior hyaloid separation is present and a minimally reflective preretinal band is obliquely inserted at one end of the fovea. Eye care specialists may have problems identifying lamellar macular hole on OCT. That is where AI image interpretation models can come into play.

    AI for Laser-induced Maculopathy

    Since 2014, the number of laser injuries reported worldwide has more than doubled because of the widespread use of laser technologies. Depending on the damage, the patient may have a quick recovery or long-term vision loss with the development of diseases such as photoreceptor’s damage, macular hole, ERM, or others. OCT is one of the methods that help to detect laser-induced maculopathy without human errors and doubts. AI image interpretation models have a reasonable prospect of helping eye care specialists define laser-induced maculopathy based on OCT scans.

    AI for Age-related Macular Degeneration (ARMD)

    Age-related macular degeneration is one of the leading reasons for blindness in people of older age, especially among women and people with obesity. Patients usually present with a gradual, painless vision loss associated with delayed dark adaptation, severe metamorphopsia, and field loss. In other words, in the early stages of AMD, patients may not have any signs or symptoms, so they may not even know they have the disease. Regular OCT screening (among other diagnostic methods) can be a life-saving vest for older people.

    AI image interpretation has shown great promise in detecting AMD, and research papers show that its capabilities are similar to those of ophthalmologists. AI-powered automated tools provide significant benefits for AMD screening and diagnosis.

    AI for Macular Telangiectasia Type 2

    Macular telangiectasia (Mac Tel) results from the capillaries abnormalities of the fovea or perifoveal region related to the retina nuclear layers and ellipsoid zone.

    Macular Telangiectasia Type 2 can have negative consequences and develop into cystic cavitation-like changes in all the layers of the retina or even transform into a full-thickness macular hole. OCT is an effective diagnostic method of macular telangiectasia type 2 as the tomograph can localize foveal pit enlargement. Which is a result of secondary loss of the outer nuclear layer and ellipsoid zone that can progress into large cysts (often called ‘cavitation’) that can encompass all retinal layers.

    Automating the detection of macular telangiectasia type 2 with the help of AI image interpretation systems for OCT scan analysis is already possible thanks to Altris AI.

    AI for Myelinated Retinal Nerve Fiber Layer

    Myelinated nerve fiber layer (MRNF) is a disease that occurs in 1%. It is a benign clinical condition that results from an embryologic developmental anomaly whereby focal areas of the retinal nerve fiber layer fail to lose their myelin sheath.

    OCT is an effective method of MRNF detection with the help of the detection of the RNFL layer. Such tools as Altris AI image interpretation models are even more accurate in retina layers detection and volume measurement thanks to their growing level of accuracy.

    AI image interpretation for Myopia

    AI image interpretation

    Myopia is not an eye disease. It is an eye-focusing disorder that affects 25% of the world population at a younger age. There are 2 distinct types of myopia: pathological and non-pathological — each of the types has its symptoms and treatment prognosis. The visual function of the patients, as well as the high quality of life, can be preserved if myopia is detected early enough and treated appropriately. Myopia is often diagnosed by ophthalmologists and optometrists with the help of OCT, thanks to its fine cross-sectional imagery of retinal structures. Unlike biomicroscopy, angiography, or ultrasonography, OCT can reveal undetectable retinal changes in asymptomatic patients with myopia.

    Current AI image interpretation models show great promise in detecting myopia on OCT scans, and their results can be compared to the results of junior retina specialists. Altris AI is an accurate AI tool for myopia.

    AI for Pigment Epithelium Detachment

    Retinal pigment epithelial detachment (PED) is often observed in Wet AMD and other conditions. It is determined as a separation of the RPE layer from the inner collagenous layer of Bruch’s membrane. With its capability to visualize retinal layers, OCT helps eye care specialists with timely PED diagnostics. Powered with AI image interpretation systems, OCT diagnostics can promise zero human errors and exceptional accuracy.

    AI for Polypoidal Choroidal Vasculopathy (PCV)

    Polypoid Choroidal Vasculopathy is a disease of the choroidal vasculature. Serosanguineous detachments of the pigmented epithelium and exudative changes that can commonly lead to subretinal fibrosis are the main OCT signs of PCV. AI image interpretation systems show great potential in establishing a difference in diagnostics between PCV and AMD.

    AI for Preretinal Hemorrhage

    AI image interpretation

    Preretinal hemorrhage is a complication of many pathologies, such as leukemia or ocular/head trauma. Missing preretinal hemorrhage means putting a patient at risk. Preretinal hemorrhage can be a presenting sign of some systemic diseases. In any case, OCT diagnostics are performed to determine preretinal hemorrhage and its real reason.

    AI image interpretation for Pseudohole

    Sometimes the pulling or wrinkling of the epiretinal membrane (ERM) can result in a gap called a pseudohole. A pseudohole can look like a macular hole; sometimes, it can turn into one, so it is essential to distinguish between these two phenomena. Optical coherence tomography can accurately determine a pseudohole revealing an epiretinal membrane with contraction of the retina or suppression of retinal layers. Combined with AI image interpretation, OCT diagnosis can guarantee higher accuracy in pseudohole detection.

    AI for Retinal Angiomatous Proliferation (RAP)

    RAP is a subtype of AMD, which is neovascularization that starts at the retina and progresses posteriorly into subretinal space. There are 3 stages of RAP: intraretinal neovascularization (IRN), subretinal neovascularization (SRN), and choroidal neovascularization (CNV). OCT is effective for detecting IRN only since changes beneath the pigment epithelium are challenging to assess. AI image interpretation models effectively differentiate between RAP and polypoidal choroidal vasculopathy (PCV), comparable to the performance of eight ophthalmologists. AI cannot substitute eye care specialists but can be an excellent decision-making support tool.

    AI for Retinal Detachment

    Retinal detachment is a serious eye condition that happens when the retina pulls away from the tissue around it. It can be a result of trauma or another disease. OCT has become a new standard for detecting early retinal detachment and defining the best time for surgical operation, for example. OCT powered with AI image interpretation systems can give eye care specialists the confidence they need to determine the degree of detachment and make the correct prognosis.

    AI for Retinitis Pigmentosa

    RP is a hereditary diffuse pigment retinal dystrophy characterized by the absence of inflammation, progressive field loss, and abnormal ERG. OCT diagnostics allows assessing morphological abnormalities in RP, providing insights into the pathology of RP and helping to make a good prognosis. AI image interpretation applied for the OCT analysis shows promising results in Inherited Retinal Diseases detection and future management.

    AI image interpretation for Retinoschisis

    AI image interpretation

    Retinoschisis is an eye condition characterized by a peripheral splitting of retinal layers. OCT is an effective method of retinoschisis diagnostic. The application of AI image interpretation tools for OCT analysis for identifying retinoschisis (among other myopia conditions) is comparable to the performance of experienced ophthalmologists.

    AI for Retinal Pigment Epithelial (RPE) Tears (Rupture)

    RPE rupture or RPE tears is the condition when this retinal layer acutely tears from itself and retracts in an area of a retina, usually overlying a pigment epithelial detachment (PED). OCT is an effective method of diagnostics of RPE tears. OCT scans will show a discontinuity of the hyperreflective RPE band, with a free edge of RPE usually wavy and scrolled up overlying the PED, contracted back towards the CNVM.

    AI image interpretation systems can provide eye care specialists with confidence when detecting RPE tears. Systems such as Altris AI can distinguish between retinal layers with exceptional accuracy, exceeding the accuracy of eye care specialists.

    AI for Solar Retinopathy (Maculopathy)

    Solar retinopathy is photochemical toxicity and the consequent injury to retinal tissues located in the fovea in most cases. OCT helps to diagnose solar retinopathy by indicating changes and focal disruption at the level of the subfoveal RPE and outer retinal bands. The overall retinal architecture remains intact. AI image interpretation models can confidently assist eye care specialists in detecting solar retinopathy, even when they are in doubt.

    AI for Subhyaloid Hemorrhage

    Subhyaloid hemorrhage is diagnosed when the vitreous is detached from the retina because of blood accumulation. This type of hemorrhage is rare and is different from intraretinal hemorrhage caused by trauma or diabetes. OCT helps to detect subhyaloid hemorrhage. For eye care specialists who don’t have experience in detecting subhyaloid hemorrhage, the AI image interpretation model can become a great support tool.

    AI for Subretinal Fibrosis

    Subretinal fibrosis appears due to wound healing reaction to the choroidal neovascularization in nAMD or other conditions. Early diagnostics of subretinal fibrosis are critical because a neovascular lesion’s transformation into a fibrotic lesion can be very rapid. OCT is regarded as the most accurate method of diagnostics today.

    AI image interpretation systems can help eye care specialists who use OCT with early diagnostics of subretinal fibrosis and improve patient outcomes.

    AI for Subretinal Hemorrhage

    Subretinal hemorrhages are a complication of various diseases which arise from the choroidal or retinal circulation. It is most often caused by AMD, trauma, and retinal arterial macroaneurysm. OCT will be an effective tool for determining the level at which subretinal hemorrhage occurred. Powered with AI image interpretation models, OCT can become the decision-making support tool eye care specialists need for subretinal hemorrhage identification.

    AI for Sub-RPE (Retinal Pigment Epithelial) Hemorrhage

    Sub-RPE (retinal pigment epithelium) hemorrhage is located between the RPE and Bruch’s membrane. OCT is an essential tool for validating the hemorrhage’s diagnosis and localization. AI image interpretation tools, such as Altris AI, will ensure that Sub-RPE hemorrhage is not missed.

    AI for Tapetoretinal degeneration or dystrophy

    Tapetoretinal dystrophy or tapetoretinal degeneration (TD) is exogenous destruction of the retina caused by a genetic mutation. Eye care specialists might easily miss such rare conditions as tapetoretinal degeneration. It is often advisable to have AI image interpretation systems as a decision-making support tool not to miss TD or other uncommon diseases.

    AI image interpretation for Vitelliform Dystrophy

    It is autosomal dominant degenerative maculopathy wherein a mutation in the bestrophin gene leads to lipofuscin accumulation in RPE cells manifested in a yellow spot. Detecting vitelliform dystrophy is critical at the early stages as it can lead to vision loss. OCT provides essential information on the lesion’s morphology, location, and dynamics. Empowered with AI image interpretation tools, such as Altris AI, eye care specialists won’t miss such a rare disease as vitelliform dystrophy at the early stage.

    AI for Vitreomacular Traction Syndrome

    Vitreomacular traction syndrome is a pathological condition characterized by a posterior vitreous detachment that leads to blurred vision or serious vision impairment. OCT is an essential method of diagnostics of vitreomacular traction syndrome as it can show the amount of involvement and tension on the macula caused by VMT. Combined with AI image interpretation tools, OCT analysis can give incredible results.

    AI image interpretation for Wet AMD

    AI image interpretation

    Wet AMD is the most widespread disease among the elderly population in developing countries. It is a disease characterized by abnormal blood vessel growth under the retina. Understanding that this disease can lead to rapid and severe vision loss, its early detection and treatment are very important. OCT is a golden standard for the diagnostics of wet AMD as it shows fluid or blood underneath the retina without dye, among other pathological signs.

    Today AI shows promising results in predicting the development of wet AMD based on OCT images. For instance, the DARC algorithm designed for detecting apoptosing retinal cells could predict new wet-AMD activity. Another effective AI image interpretation algorithm determines the location and volumetric information of macular fluid within different tissue compartments in wet AMD, providing eye care specialists with the ability to predict visual acuity changes.

    AI for X-linked Juvenile Retinoschisis (XLRS)

    XLRS is a rare congenital retina disease caused by mutations in the RS1 gene, which encodes retinoschisin, a protein involved in intercellular adhesion and likely retinal cellular organization. The disease usually affects younger males in their teenage years who complain about blurred vision. OCT is used to detect schisis in the superficial neural retina and thinning of the retina. Despite the lack of research articles on AI in OCT diagnostics of XLRS, there are AI image interpretation tools that already cope with this task effectively.

    Final Words

    Artificial intelligence can identify, localize, and quantify pathological signs in almost every disease of the macula and retina. That is how AI image interpretation systems can provide decision-making support with the pathologies at their early stages or rare pathologies. AI can help to detect many pathologies that are invisible to the human eye because of their size or that are at their early stage. 

    The overall potential of artificial intelligence for ophthalmologists and optometrists is enormous and includes pathological scan selection and scan analysis with the probability of existing pathologies and pathological signs. One trial is worth a thousand words in the case of AI tools for ophthalmologists and optometrists.

  • types of optometry practices

    Types of Optometry Practices & the Role of OCT

    Mark Braddon
    14.09.2022
    7 min. read

    Various types of optometry practices have always played a crucial role in diagnosing many eye diseases and promptly referring to a retinal expert. According to Essilor International research, poor vision is the most common disability in the world today. The good news is that 90% of vision loss cases are treatable or preventable if discovered in their early stages.

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    However, by performing only traditional types of optometry practices, such as anterior and posterior segment examinations, optometrists may miss the complete picture of a patient’s eyes. That is why optometry specialists are embracing a new technique: optical coherence tomography (OCT) examination. 

    Optometry OCT practice helps go beyond standard eye examination procedure by better visualizing the eye’s structures and providing an additional quantitative assessment.

    In this article, I will discuss the most important types of optometry practices and emphasize the role of OCT scan interpretation in optometry.

    Types of optometry practices

    When performing a full optometric examination, the optometrist should not only assess the visual acuity with an eye chart but also check their eye health. The types of optometry practices and tools are now very diverse and depend on the application field and the qualification level. Nowadays, there are a few eye examination techniques, although they may vary from country to country, that help diagnose a patient more accurately and improve follow-up care.

    Ophthalmoscope eye examination 

    types of optometry practices

    Ophthalmoscopy plays a crucial role in detecting the conditions of the retina, blood vessels, and optic disc. This is a basic eye examination procedure that optometrists usually perform to evaluate many diseases, such as diabetic retinopathy or retinal vein occlusion. 

    During the direct ophthalmoscopy, the optometrist shines a light into the patient’s eyes to see the inside. Binocular indirect ophthalmoscopy also involves shining a light into the patient’s eyes, however, it allows eye care specialists to take a better look at the retina and its parts that are difficult to see with other eye examination techniques. The indirect ophthalmoscopy is usually combined with pupil dilation and another optometry practice called scleral depression.

    Slit lamp optometric examination

    types of optometry practices

    A slit lamp consists of a microscope, light source, and frame on which a patient lies their head. This regular eye examination procedure lets an optometrist focus on the eye by working with the light: expand or narrow it, increase brightness, and filter with colors. Sometimes the procedure also includes putting a few dye drops in a patient’s eye to examine some of its parts.

    Slit lamp examination is pain-free and allows an optometrist to view the sclera, iris, or cornea to detect diseases related to allergies, autoimmune disorders, gout, or even melanoma. Such eye examination procedure also allows to view the retina of the eye to detect the pathological signs of diabetes. Optometrists usually use a slit lamp along with an ophthalmoscope examination.

    Refraction eye examination procedure

    types of optometry practices

    One more type of types of optometry practices is a refraction test, usually performed to detect if a patient needs glasses or contact lenses. This test made with a phoropter is quick and painless. During the optometric examination, the optometrist adjusts the power of the lenses by moving or turning them back and forth until a patient can clearly see the letters on the chart.

    An optimal value of 20/20 is considered ideal vision, while a deviation means a refractive error. This may indicate that when light passes through the lens of the patient’s eye, it is not refracted properly. An optometrist can detect astigmatism, myopia, presbyopia, and a refractive eye problem during a refraction test. This, in turn, helps detect macular degeneration, retinal vein occlusion, retinitis pigmentosa, and retinal detachment.

    • Cycloplegic refraction

    Sometimes the optometrist may decide that the normal refraction is insufficient or inaccurate due to error. During refraction, the patient may unconsciously focus, affecting the test result and showing nearsightedness or farsightedness.

    Then the optometrist performs cycloplegic refraction using cycloplegic eye drops. This eye examination procedure paralyzes the muscles that focus the eye to determine the refractive error. Сycloplegic refraction exam is especially useful for children, patients with pre-presbyopia, and LASIK patients.

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    • Autorefraction

    Autorefraction is an eye examination procedure performed using a special autorefractor device, also called an optometer. This exam automates the estimation of refraction and determines its error. Usually, the indications for the procedure are myopia, farsightedness, astigmatism, presbyopia, and prescription of glasses and contact lenses.

    Retinoscopy optometric examination

    types of optometry practices

    Among different types of optometry practices usually performed to detect farsighted, nearsighted, or astigmatism, and the need for glasses is retinoscopy. This procedure is pain-free and quick. Using a retinoscope, the optometrist projects a beam of light into the patient’s eye. This light moves along a horizontal and vertical trajectory, reflecting off the back of the eye. The eye care practitioner observes the movement of light with the help of lenses they place in front of the eye. Then the optometrist changes the lens’s power and tracks the reflection’s direction and pattern. This test is performed to find a possible anomaly.

    Role of optometry OCT practice 

    The types of optometry eye examination techniques described above are fundamental for any diagnosis. However, adopting modern optometry OCT practice systems already complements clinical practice perfectly and has the prospect of widespread distribution among optometrists worldwide. 

    Knowing that the prevalence of some eye conditions, such as Myopia or Dry AMD, has increased with the pandemic, specialists need to implement modern methods and eye examination techniques in their clinical practice. Current optical coherence tomography devices allow optometrists to perform consistent analysis and furthermore have special software and a database for storing patient information. Compared to other retinal examination methods, such as fundus photography, OCT scan interpretation enhances patient care by improving the quality of diagnosis.

    High-quality information provided

    Modern optometry OCT diagnostics allow optometrists to quickly obtain a huge amount of information about the patient’s eye. Built-in software collects images and compares results to normative databases. This allows optometrists to easily track patient progress or regression and generate reports that ophthalmologists or surgeons may need for follow-up treatment.

    For example, suppose a patient has a disorder with the optic nerve, macula, or vascular system. In that case, the optometrist can send data to the ophthalmologist promptly, highlight important aspects of the patient’s condition, and provide abnormal OCT scan results for additional clarity. 

    No missed pathologies

    Optometry OCT practice provides higher diagnostic standards, ensuring fewer pathologies or pathological signs are missed. OCT scan interpretation helps detect early vision-threatening eye conditions. For example, the system can detect AMD in the early stages, which is crucial for preventing vision loss due to subretinal fibrosis. With optometry OCT practice, the thickness of the retina over the macula and posterior pole can be analyzed to detect retinal edema or atrophy. Optometrists can also confirm diabetic macular edema (DME) and decide on further treatment based on the results of its examination. In addition, OCT perfectly visualizes the retinal pigment epithelium (RPE) and choroid.

    More patients served with comfort

    By better visualization of the eye structures, optometrists provide each patient with an individual approach. This level of service ensures comfort for patients and trust for a specialist. Optometry OCT practice allows optometrists to avoid routine work and devote more time and energy to patients. More importantly, the OCT scan interpretation helps establish contact, allowing patients to understand the examination and treatment plan.

    Impact of AI on optometry OCT practice

    OCT scanning allows optometrists to accumulate large amounts of patient data. However, a large amount of information can be difficult and time-consuming to process, even for experienced specialists. The collaboration of optometry OCT practice and artificial intelligence (AI) gives optometrists a unique opportunity to analyze a large amount of data and make better clinical decisions. Here are 4 key benefits of AI which completely transform the OCT scan interpretation process for optometrists:

    • Gaining confidence. 16.3% of interviewed eye care practitioners still avoid using OCT in their daily practice because of the lack of confidence in their interpretation skills. However, with AI, this problem will be solved.
    • Fast examination. Implementing AI-powered management systems in daily clinical practice reduces the time optometrists have to spend on non-pathological scans.
    • Clear diagnosis. 59% of specialists acknowledge that they have to interpret controversial scans around 1-3 times a week. AI helps optometrists with controversial and abnormal OCT scans, so they don’t need to guess the diagnosis.
    • High diagnostic standards. 30,5% of interviewed ECPs admit they are unsure how often they miss pathologies. When working with OCT, AI systems ensure no minor, early, rare pathologies are missed.

    OCT scanning allows specialists to easily, quickly, and safely obtain many images, producing a lot of data. As AI aims to work with large volumes of data, more and more AI models are being created to help optometrists.

    types of optometry practices

    Altris AI has developed an artificial intelligence platform to assist ECPs during their optometric examination and already plays a significant role in diagnosing and treating eye diseases using optometry OCT techniques. We have trained an AI algorithm on 5 million OCT scans collected in 11 ophthalmic clinics with a 91% accuracy. Watch a short video to see how to detect pathological signs with Altris AI:

    https://www.youtube.com/watch?v=Ehhwl6Q0O-A&ab_channel=Altris

    Future of optometry oct practices

    The integration of OCT into the clinical practice of optometrists is beneficial and shows great promise. However, to gain the most accurate diagnosis, the interpretation of scans should be carried out in cooperation with other optometry eye examination tools. Optical coherence tomography implemented with other eye examination techniques, including gonioscopy or slit lamp biomicroscopy, boosts diagnostic performance and provides valuable data.

    Optometry oct practices are becoming routine for providing improved examination and patient care. This technology can also improve the confidence of eye care specialists. Detecting many pathologies using optical coherence tomography has an immediate practical benefit. Due to its high resolution, it defines and identifies early pathological signs before patients even notice any symptoms. 

  • ophthalmology mobile apps

    Top 11 Optometry & Ophthalmology Mobile Apps for Eye Care Specialists

    Maria Znamenska
    15.08.2022
    10 min. read

    Top 11 Optometry & Ophthalmology Mobile Apps for Eye Care Specialists

    Today, there are hundreds of ophthalmology mobile apps available to both experienced eye care specialists and beginners. Some of them assist in learning and practice as clinical tools, and some of them are educational apps for opticians. Some mobile applications are basically a database of useful materials, ophthalmic atlases, so to say.

    Register in a free Demo Account to see how AI for OCT works. AMD, DR, early glaucoma examples.

    Demo Account Get brochure

    In this post, I will focus on educational ophthalmology and optometry apps and highlight their main features and functions.

    Altris Education OCT

    Altris Education OCT is a unique free mobile  ophthalmology app that contains millions of OCT scans labeled by a team of retina experts. More than 9000 eye care specialists have already joined the application.

    The app is interactive, which means that eye care specialists can highlight pathological signs on the scan 1 by 1 to learn about their location. The database of OCT scans is updated every day with a new labeled OCT scan, so users can gather their library right within the app. 

    Watch a short video and learn how to interpret scans with Altris Education OCT ophthalmology mobile app:

    Interactive eye atlas 

    The home page of the Altris Education OCT ophthalmology mobile app consists of 4 sections: 

    • In the Feed section, users will find millions of OCT scans of the retina to practice and improve their skills. 
    • In the Folders sections, there are 41 folders with various hereditary diseases, pathologies, and pathological signs. If an eye care specialist uploads the app for a specific reason, for example, to learn how to detect Epiretinal Fibrosis, he/she can easily find a folder with needed scans and work on them.
    • In the News section, users can find recent news from the OCT world and current researches.  
    • In the Community section, a user can create a post and discuss curious cases with their colleagues. 

    Community interaction

    A team of Altirs Education OCT has the aim to build a real community of ophthalmologists and optometrists worldwide who share their passion for learning. Most eye care specialists often face difficulty while interpreting OCT scans in their everyday clinical practice. We created a community where each app user can discuss problematic scans or ask OCT-related questions ( what OCT equipment to choose?). 

    Moreover, the Altris team will engage experienced OCT experts in the forums to give a professional assessment of the scans. 

    In addition, the Altris ophthalmology mobile app allows its users to like, comment and share OCT scans, as well as save them in a personal library. 

    Special features

    In Altis ophthalmology mobile app, each pathological sign is highlighted with a different color so eye care specialists can easily learn how to interpret OCT scans. Each scan contains two tabs: pathologies and diagnosis, so users are able to highlight the pathologies in the first place and then guess the diagnosis. To check himself/herself, a user switches to the diagnosis tab and finds out the name of the disease. What is more, he/she can zoom in on OCT scans to view pathological signs in detail.

    Register in a free Demo Account to see how AI for OCT works. AMD, DR, early glaucoma examples.

    Demo Account Get brochure

    Membership options/perks

    Altris ophthalmology mobile app not only provides its users with a huge database of educational materials. It also engages eye care specialists to invite friends, gain budges and upgrade their level. To reach the next level, there are tasks like “Search your first scan” or “Learn 5 scans in detail”. When a user level up, he/she gets access to new folders with pathological scans. 

    Another great feature of the app is that it constantly sends its users an unfamiliar OCT scan, so they can explore something new on a daily basis. The basic functionality of the app is completely free. However, ophthalmologists and optometrists can also become Pro users of Altris Education OCT and unlock more scans and app features for  $4 monthly or $25 annually.

    Please upload this FREE app if you are interested:

    ? Android link: https://bit.ly/3YarBQa
    ?iOS link: https://apple.co/3NLyPZ7

    Eye Handbook

    mobile ophthalmology app

    Being on the market since 2010, Eye Handbook is well known and loved by many ophthalmologists and optometrists. Eye Handbook is used worldwide for both diagnosis and treatment, as the app provides eye care professionals with tools for acuity testing, children’s target fixation, or color vision testing. Now let’s take a closer look at the app’s functionality.

    Eye atlas 

    The overview of diseases in the mobile ophthalmology app begins with the Eye Atlas tab, which is a database of various pathologies arranged in alphabetical order. The description of each disease is accompanied by fundus photos, OCT images, or fluorescein angiography. Users can sort pathologies by category choosing, for example, retinal diseases, glaucoma, or oculoplastics. 

    Moreover, with the Eye Handbook ophthalmology mobile app, users can view videos of ophthalmic surgeries, such as posterior polar cataract surgery, and many more. Users are also able to sort videos by most relevant or ranked. In addition to videos, the application provides ophthalmologists and optometrists with access to audio materials, flash cards, and slides.

    Community interaction

    The Eye Handbook mobile ophthalmology app has a forum with topics open for discussion. Users can become a part of the community, add their posts, choose the appropriate category and invite like-minded eye care specialists to discuss the latest news in the field of ophthalmology. 

    Educational materials

    The Eye Handbook is a very useful application not only for ophthalmologists but also for optometrists. Not to mention a bunch of study materials, the application has collected a large number of vision tests such as Amsler grids, duo-chrome test, OKN drum, and a lot more.

    The ophthalmology mobile app contains a variety of calculators, like the Glaucoma risk calculator, which eye care specialists can use in their clinical practice right from their smartphones. Eye Handbook gathered even coding, like ICD-10 or CPT. In the app, they are also able to find detailed information about ophthalmic meds, check the EHB manual, and get access to a constantly updating news feed.

    Eye Emergency Manual

    mobile ophthalmology app

    Eye Emergency Manual mobile ophthalmology app is a great emergency aid because it quickly provides basic information about eye diseases. The application has several features, which I will explain in more detail below.

    Eye atlas

    This mobile ophthalmology app provides structured and detailed information about many eye traumas and treatments. Users can find fundus photos, photographs of real people’s eyes, or scans of each trauma and read about their initial treatment. In some cases, the developers even created Eye Trauma Communication Checklists to help eye care specialists come to a medical conclusion many times faster. 

    The Eye Emergency Manual app also contains a database of acute red eye or eyelid cases. All the information is presented clearly and plainly.

    Special features

    Each pathology overview can be saved so the app users can later explore their favorite pages or favorite glossary terms. The app also provides eye care professionals with the ability to search for a needed term, pathology, or assessment.

    Educational materials

    One of the unique features of the Eye Emergency Manual app is a variety of checklists, both for a certain pathology or a patient in general. In the app, users can find a comprehensive list of questions to ask their patients, which is useful both for ophthalmologists and optometrists. Eye Manual also contains pediatric assessment and injured patient assessment.

    What is more, the app developers created a diagnostic tree that is aimed to help users by suggesting diagnoses. After answering a few questions, the app showcases a few diseases and suggests reading about them in the eye atlas.

    OCTaVIA

    mobile ophthalmology app

    One of the main differences between the OCTaVIA mobile ophthalmology app and other apps is the fact that it isn’t free. Some other apps for opticians, which I mention in this article, have a paid subscription, but OCTaVIA itself costs $5.99 yearly. However, it is interesting to explore how this price is justified. 

    Eye atlas

    This ophthalmology app contains a constantly updated database of diseases from A to Z. Needless to mention that the application covers only retinal pathologies and provides information about retinal diseases, from Chorioretinal scars to VMT (Vitreo-Macular Traction).

    Educational materials

    One of the advantages of the OCTaVIA mobile ophthalmology app is that for each pathology it provides two views — fundus photo and OCT scan. They may be colored or not, but each fundus photo and OCT scan contains markers, which are explained in the text. What is curious, there are always a few useful links, so users can discover more trustworthy information about the disease.

    Atlas of Ophthalmology Onjoph

    mobile ophthalmology app

    The Atlas of Ophthalmology Onjoph app offers a clinical picture for almost all eye diagnoses. It includes more than 6,000 pathologies, from glaucoma to macular degeneration, and even includes such rare diseases as Stargardt syndrome. The image database is constantly being expanded and updated to include other eye diseases.

    Eye atlas

    Using the search function, eye care specialists can find specific clinical pictures and display them in lists based on diagnoses, ICD-10 code, or keywords. In the Atlas of Ophthalmology Onjoph, users will also find:

    • accompanying diagnosis;
    • code according to ICD-10;
    • brief comment.

    Atlas users can also change the font size, save essential images, or forward images by email.

    Educational materials

    The mobile ophthalmology app has a clear structure for all images. All pathological cases are arranged according to eye regions (conjunctiva, cornea, retina, lens, etc.). Within the eye area, the images are listed according to the type of disease (degeneration, inflammation, tumors, etc.).

    Membership options

    The mobile application also allows its users to save their favorite articles in the Favorites folder, but this feature is paid and has two types of subscription:

    • $3.99 for a Silver plan
    • $29.99 for a Gold plan 

    Other ophthalmology & optometry apps tools worth mentioning

    Ophthalmology Guide

    mobile ophthalmology app

    In case an eye care specialist needs a topic-oriented mobile ophthalmology app, they may check Ophthalmology Guide. Its users are allowed to choose the desired topic and find out the key characteristics of pathologies. In addition, they can also find several fundus photos, scans, and pathology charts.

    Unfortunately, I can’t say that the Ophthalmology Guide app is user-friendly. It contains a few bugs and lacks some additional options, like eye atlases or lectures.

    However, the app is promising thanks to the clear categorization of topics, it can be very convenient for ophthalmologists and optometrists to quickly find specific information about examination and management of the pathology.

    Easy Ophthalmology Atlas

    mobile ophthalmology app

    Easy Ophthalmology Atlas is one of those ophthalmology and optometry apps that are also worth mentioning. It is an offline color atlas of the most common eye diseases. The app contains 13 chapters, where users can find clinical features, diagnosis, and treatment management for different pathologies.

    Easy Ophthalmology Atlas lacks quite a lot of features compared to other ophthalmologist tools on the list. 

    However, this mobile ophthalmology app has the potential to replace the heavy paper versions of the ophthalmology guides if the information is updated regularly in it.

    Ophthalmology & Optometry Guide

    mobile ophthalmology app

    Another representative of ophthalmology and optometry apps was created to assist students in learning the clinical signs, symptoms, and complications of different pathologies. It provides users with basic knowledge of eye diseases and pathologies, their causes, and treatment.  

    Ophthalmology & Optometry Guide has up to 18 sections, each stands for a specific eye region (conjunctiva, cornea, retina, optic nerve, pupil, etc.). Each section explains the importance of eye region examination and highlights various abnormalities.

    I would recommend this ophthalmology mobile app for beginners or students of the 1st course because it contains a lot of general information that can be useful for those who have just started their careers. However, in the long run, the app lacks media content, real-life examples, and other important features.

    Ophthalmology Atlas

    mobile ophthalmology app

    Ophthalmology Atlas is a database for ophthalmologists and optometrists, showcasing up to 12 areas of eye diseases from A to Z. 

    Here users can find diseases of the cornea, lens, retina, and 9 more. The app is a digital variant of a paper atlas with a bunch of real photos and a lot of complicated cases, which is great for beginners. 

    Clinical Ophthalmology

    mobile ophthalmology app

    The Clinical Ophthalmology mobile app has a very simple interface and a list of 20 pathologies to read about. Although the application has only one feature and lacks media content, the team has provided users with the ability to share content. 

    3D Atlas of Ophthalmology

    mobile ophthalmology app

    The app is a collection of various 3D photos and videos, mostly created by Dr. John Davis. One of the distinctive features of the app is that to watch media content users will need to wear Red-Blue 3D glasses or VR Headset.  

    Will Ophthalmology Mobile Apps Replace Webinars and Conferences?

    According to our research on OCT education, 36% of optometrists and ophthalmologists around the world choose webinars to study OCT interpretation. 36% prefer conferences as the source of new information, 18% choose atlases, and only 11% of eye care specialists trust ophthalmology mobile apps.  

    On the one hand, mobile ophthalmology app cannot replace atlases, webinars, internships, and clinical practice. On the other hand, interactive mobile application contribute to the assimilation of information much better than printed materials and have unlimited data storage capacity. Another of their advantages is that users can learn on the go for little money, while internships and clinical practice takes much time and can be expensive. 

    Summing up, any ophthalmologist and optometrist who has worked at least a little with OCT knows that practical skills are more important than theory. That is why our team believes that ophthalmology mobile apps will inevitably become an additional effective tool for learning OCT interpretation.

  • OCT interpretation

    OCT Interpretation & Eye Examination: How AI can Solve 4 main Problems

    Maria Znamenska
    10 July 2022
    5 min. read

    OCT Interpretation & Eye Examination: How AI can Solve 4 main Problems

    The data derived from OCT interpretation provides us with an unthinkable amount of knowledge compared to just a few decades ago. However, the downside of this advancement is that the expertise needed to interpret the scan has also grown exponentially.

    Also, with such a machine’s precision, even the slightest changes in the needed conditions can compromise the scan’s reliability. For instance, the patient’s head tilt can affect the measured thickness of the retinal nerve fiber layer. Therefore, differentiating between normal and pathological findings is crucial for accurate diagnosis and effective patient management.

    AI for OCT Analysis

    FDA-cleared AI that detects 70+ retina pathologies

    Demo Account Get brochure

    Steps in OCT interpretation

    When evaluating an OCT scan, the most logical first step is to compare it to the appearance of a healthy macula. Retinal anatomy can be challenging, but simply put, you can divide the retina into two zones: the inner and the outer retina. 

    The top portion of a B-scan represents the inner retina, which lies closest to the vitreous humor. The inner retina comprises layers from the internal limiting membrane to the external limiting membrane (ILM, RNFL, GCL, IPL, INL, OPL, ONL, ELM). The central retinal artery supplies blood to the inner retina; its largest capillaries are located innermost, while the smallest capillaries are outermost at the level of the INL and IPL.

    The outer retina is closest to the choroid (bottom of the B-scan). It consists of the photoreceptor layers through to the choroid (PR, RPE, Bruch’s membrane, choriocapillaris, and choroidal stroma). The outer retina is avascular, receiving its oxygen and nutrients from the choroid.

    normal macula oct

    The next step in evaluating a scan is determining whether the correct retinal layers are hyperreflective (dark) and hyperreflective (bright).

    oct scan interpretation: hyperreflectivity and hyporeflectivity

    Source

    Identifying the specific layer in which a change is observed on the OCT scan will not only provide clues to possible pathologies but also help discern the underlying process. For instance, changes in the Retinal Pigment Epithelium (RPE) may affect metabolic support and the health of photoreceptor cells, while thinning of the nerve fiber layer can indicate degenerative processes, such as glaucoma. OCT findings also provide insights into a patient’s visual acuity.

    Another crucial aspect of OCT interpretation is assessing the integrity of the retinal structure. In diseased eyes, you frequently encounter disruptions of the RPE or the ellipsoid zone (EZ). These disruptions often result from fluid accumulation that elevates higher layers from beneath.

    OCT also allows visualization of any breaks in the retina. These breaks, commonly referred to as retinal tears or holes, can be classified as full-thickness or partial-thickness, depending on their extent.

    Blurring or loss of definition of retinal structures is another key finding in OCT interpretation. This signifies a loss of the retina’s normal layered organization. One example is the disorganization of inner retinal layers that can occur in age-related macular degeneration (AMD), manifesting as indistinct layers merging into a homogenous mass.

    As you can see, although OCT is widely regarded as a superior imaging modality, it remains a complex instrument that can lead to misdiagnosis, especially for those early in their careers.

    For this article, we surveyed eye care practitioners to understand how they learned the interpretation of OCT, how often they encounter challenging or controversial scans in their practice, and what major pain points could be addressed with AI-assisted OCT interpretation.

    According to our survey, there are four main ways to get OCT education: webinars, conferences, atlases, and mobile apps.

    OCT interpretation

    But even after attending courses or webinars, ophthalmologists and optometrists often feel that while they possess theoretical knowledge, they lack the practical experience necessary to feel fully confident in interpreting real-world OCT eye examinations. Thus, they may avoid working with OCT, even though they know its revolutionary value.

    By surveying 1034 seasoned and newly practicing optometrists and ophthalmologists worldwide, encompassing a broad spectrum of clinical experience, we’ve identified the four main barriers to embracing OCT technology.

    Four pain points of OCT interpretation

    • Lack of confidence

    Our survey revealed that 16.3% of eye care specialists avoid offering OCT eye examinations to their patients due to a lack of confidence in their interpretation skills. This mirrors a similar situation where even experienced practitioners may over-refer patients to eye hospitals out of an abundance of caution. While this approach might be justifiable in individual cases, it ultimately proves detrimental in the long run. For practitioners, it leads to a decline in clientele, while patients suffer from not receiving timely care at their initial point of contact.

    OCT Interpretation infographic

    • Slow OCT scan reading

    While a machine can capture thousands of high-resolution scans in mere seconds, a clinician’s subsequent OCT interpretation is far more time-consuming. They must meticulously analyze each scan, not only for any signs of pathology but also in the context of the patient’s complete medical history.

    Some eye care specialists may spend up to 40 minutes per OCT examination, which can negatively impact their practice’s efficiency and overall quality. However, on average, specialists dedicate about 10 minutes per OCT eye exam, assuming they are satisfied with the report generated by their device’s OCT interpretation and are not faced with ambiguous or difficult-to-interpret scans.

    • Minor, early, rare pathologies missed

    Another common challenge in OCT scan interpretation is the potential for overlooking minor, early, or rare pathologies. Our survey reveals that 20.2% of eye care specialists miss such findings 1-3 times per week, while 4.4% miss them more frequently, 3-5 times a week. However, these figures only represent acknowledged errors. A concerning 30.5% of ophthalmologists and optometrists admit they are unsure whether they miss any minor, early, or rare pathologies.

    Interpretation of OCT

    Failing to identify pathologies in their early stages can have devastating consequences for patients. For example, missing early signs of glaucoma, an irreversible condition, can lead to blindness. Similarly, overlooking rare or minor pathologies can result in inadequate patient follow-up and treatment, potentially exacerbating the condition. Accurate OCT interpretation and timely diagnosis are paramount for positive patient outcomes. This discussion focuses solely on the devastating impact on patients’ lives and doesn’t even delve into the potential legal ramifications of missed signs on OCT scans.

    • Controversial Scans 

    Most eye care specialists encounter challenging or ambiguous OCT scans that they find difficult to interpret in their practice. In the vast majority of cases (99%, to be precise), eye care specialists seek a second opinion from their colleagues when faced with an uncertain scan.

    However, not all clinicians have equal access to this valuable resource. Optometrists and ophthalmologists (practicing in remote or rural areas) often work in isolation, lacking the readily available professional support network that their colleagues in hospital settings enjoy. While those in hospitals can quickly consult peers for additional insights or guidance, the mentioned group often faces limited opportunities for collaborative decision-making and professional development.

    Interpretation OCT

    In many professions, sharing challenging information with colleagues online could easily overcome these obstacles. However, the highly sensitive nature of medical data prevents eye care professionals from utilizing such convenient solutions.

    How AI can help with OCT interpretation

    • Workflow optimization

    Our recent survey showed that among more than 1000 participating eye care specialists, 40% have more than 10 OCT exams daily. Meanwhile, 35% of eye care specialists have 5-10 OCT daily examinations. Unfortunately, more patients per day mean an increased risk that specialists may miss some minor, rare, or early conditions.

    Artificial intelligence can significantly speed up the screening process and OCT interpretation while reducing the controversy around diagnoses. This faster and more accurate diagnostic tool will enable more patients to be seen, allow for quicker responses to pathologies that pose a risk to eyesight, and reduce the burden on strained hospitals with needless patient referrals, as well as free up patients from unnecessary stress and wasted time.

    For instance, the Altris AI platform, which offers AI-powered interpretation of OCT for 70+ pathologies, has a severity grading of b-scans. Severity grading means it is easy to see if the eye is healthy ​(removing any need to spend time interpreting) or highlight ​where the pathology is and the degree of severity. ​

    • Green – no pathology detected
    • Yellow – mild to medium level of severity
    • Red – severe pathology detected

    Severity analysis of OCT scan by Altris AI

    Artificial intelligence tools also offer an interpretation of OCT in reports with customized measurements and selected biomarkers, retinal layers, or segments, allowing precise focus on treatment monitoring and patient response to therapy. This fastens the exam procedure and provides patients with educational materials they can understand.

    Customizable and enriched OCT reports also enhance a patient’s medical history: the streamlined process of integrating OCT data into EMR ensures that every eye scan, with its corresponding measurements, biomarkers, and visualizations, becomes an easily accessible part of the patient’s medical history.

    This is crucial for continuity of care and simplifies the audit process, providing a clear and comprehensive record of the patient’s eye health over time. Just optometry chains alone can perform an imposing volume of OCT scans, with some reaching upwards of 40,000 per week. While this demonstrates the widespread adoption of this valuable diagnostic tool, it also presents a challenge: the increased risk of missing subtle or early-stage pathologies amidst the sheer volume of data.

    Pathology Progression, part of Altris AI OCT report

    Enhanced OCT reports offer a solution by providing a crucial “second look” at scan results. While not foolproof, this double-check significantly reduces the risk of overlooking abnormalities in OCT interpretation, ultimately improving patient outcomes and safeguarding the clinic’s reputation.

    • Identification of minor, early, and rare pathologies, including Glaucoma

    AI systems that include pathology detection and segmentation in OCT scan interpretation enable automated disease characterization and longitudinal monitoring of therapeutic response. Wet AMD, Diabetic Retinopathy, and genetic diseases are among the pathologies that lead to blindness if not detected in time. Detecting pathological signs and pathologies related to these disorders in time can literally save patients from future blindness.

    Another significant benefit of machine learned systems with early detection is OCT analysis for early glaucoma. Current tests often rely on observing changes over time, delaying treatment assessment and hindering early identification of rapid disease progression. OCT frequently detects microscopic damage to ganglion cells and thinning across these layers before changes are noticeable through other tests.

    Early glaucoma risk assessment by Altris AI

    Another benefit of AI systems is that OCT interpretation for glaucoma usually utilizes a normative database to assess retinal normality. However, these databases are limited and represent an average of a select group of people, potentially missing early glaucoma development in those who deviate from the “norm.” Conversely, individuals may be unnecessarily referred for treatment due to not fitting the “normal” profile, even if their eyes are healthy.

    • Second opinion

    With AI-assisted OCT, you have the combined knowledge and experience of leading eye care specialists for every patient. This technology leverages massive datasets of medical images and clinical data meticulously analyzed by retinal experts during AI development. It is a valuable second opinion tool, helping you confirm diagnoses and identify subtle patterns the human eye might miss.

    For example, the Altris AI mentioned above leverages a massive dataset of thousands of OCT scans collected from 11 ophthalmic clinics over the years. Carefully segmented and labeled by retinal professionals, these scans were used to train the AI. By analyzing each pixel of an image and its position relative to others, the AI algorithms have learned to distinguish between different biomarkers and pathologies.

    AI for OCT Analysis

    FDA-cleared AI that detects 70+ retina pathologies

    Demo Account Get brochure

    Summing up

    While OCT has revolutionized eye care diagnostics, its full potential is hindered by challenges in interpretation, ranging from a lack of confidence to time constraints, the risk of missing subtle pathologies, and fear of malpractice. The survey of eye care professionals underscores a critical need for innovative solutions, particularly for practitioners who lack access to immediate peer consultation. These pain points highlight the potential for AI-assisted OCT interpretation to not only streamline workflows but also significantly enhance diagnostic accuracy and patient care.