{"id":255,"date":"2025-10-20T06:15:16","date_gmt":"2025-10-20T13:15:16","guid":{"rendered":"https:\/\/scienceblog.com\/neuroedge\/?p=255"},"modified":"2025-10-20T06:15:16","modified_gmt":"2025-10-20T13:15:16","slug":"tiny-eye-chip-lets-blind-patients-read-again","status":"publish","type":"post","link":"https:\/\/scienceblog.com\/neuroedge\/2025\/10\/20\/tiny-eye-chip-lets-blind-patients-read-again\/","title":{"rendered":"Tiny Eye Chip Lets Blind Patients Read Again"},"content":{"rendered":"<p>A wireless implant no bigger than a grain of rice has restored reading vision to people who had lost their central sight to macular degeneration, a condition that affects over 5 million people worldwide and ranks as the leading cause of irreversible blindness in older adults. In a clinical trial that wrapped up this month, 27 out of 32 participants could read books, food labels, and subway signs a year after receiving the device.<\/p>\n<p>The results, published October 20 in the New England Journal of Medicine, mark the first time an eye prosthesis has restored what researchers call &#8220;form vision,&#8221; the ability to perceive shapes and patterns rather than just light sensitivity. Previous attempts at retinal implants gave patients little more than the ability to detect brightness.<\/p>\n<p>&#8220;All previous attempts to provide vision with prosthetic devices resulted in basically light sensitivity, not really form vision,&#8221; said Daniel Palanker, a professor of ophthalmology at Stanford Medicine and co-senior author of the study. &#8220;We are the first to provide form vision.&#8221;<\/p>\n<h2>A 20-Year Vision<\/h2>\n<p>The device, called PRIMA, consists of two parts: a small camera mounted on a pair of glasses, and a 2-by-2-millimeter chip surgically placed under the retina. The camera captures images in real time and beams them via infrared light to the chip, which converts the light into electrical pulses that stimulate the remaining retinal neurons. Essentially, the chip replaces photoreceptors destroyed by disease.<\/p>\n<p>Palanker first imagined such a system two decades ago while working with ophthalmic lasers. He realized the eye&#8217;s transparency could be an asset rather than an obstacle. By using infrared light, invisible to natural photoreceptors, the device allows patients to merge prosthetic central vision with whatever peripheral vision they have left. That dual capability helps with orientation and navigation in ways earlier implants could not.<\/p>\n<blockquote><p>&#8220;The device we imagined in 2005 now works in patients remarkably well.&#8221;<\/p><\/blockquote>\n<p>Because the chip is photovoltaic, it generates its own electrical current from light alone. No external power source. No cables snaking out of the eye. The simplicity of the design is part of what makes it work.<\/p>\n<h2>Reading in Black and White<\/h2>\n<p>The trial enrolled 38 patients over age 60 with geographic atrophy, an advanced form of age-related macular degeneration that gradually erodes central vision. All had vision worse than 20\/320 in at least one eye. Four to five weeks after the chip was implanted, patients began training with the glasses. Some could make out patterns immediately. Others took months to reach peak performance, similar to the learning curve for cochlear implants.<\/p>\n<p>Of the 32 patients who completed the year-long study, 26 showed clinically meaningful improvement, defined as the ability to read at least two additional lines on a standard eye chart. On average, participants improved by five lines. One patient improved by 12. With digital enhancements like zoom and contrast adjustment, some reached vision equivalent to 20\/42.<\/p>\n<blockquote><p>&#8220;The fact that they see simultaneously prosthetic and peripheral vision is important because they can merge and use vision to its fullest.&#8221;<\/p><\/blockquote>\n<p>Two-thirds of participants reported medium to high satisfaction with the device, using it daily to read books and navigate public transit. Right now, the system provides only black-and-white vision with no grayscale, but Palanker is developing software to add shades of gray. Face recognition, he noted, is the second most requested feature after reading, and it requires grayscale to work well.<\/p>\n<p>Nineteen participants experienced side effects, including high eye pressure, retinal tears, and bleeding under the retina. None were life-threatening, and nearly all resolved within two months.<\/p>\n<p>Palanker is already engineering a next-generation chip with pixels as small as 20 microns, compared to the current 100 microns. That would pack 10,000 pixels onto each chip instead of 378, potentially giving patients 20\/80 vision, or close to 20\/20 with electronic zoom. He also wants to test the device for other types of blindness caused by lost photoreceptors.<\/p>\n<p>&#8220;This is the first version of the chip, and resolution is relatively low,&#8221; Palanker said. &#8220;The next generation of the chip, with smaller pixels, will have better resolution and be paired with sleeker-looking glasses.&#8221;<\/p>\n<p><a href=\"https:\/\/doi.org\/10.1056\/NEJMoa2501396\">New England Journal of Medicine: 10.1056\/NEJMoa2501396<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A wireless implant no bigger than a grain of rice has restored reading vision to people who had lost their central sight to macular degeneration, a condition that affects over 5 million people worldwide and ranks as the leading cause of irreversible blindness in older adults. In a clinical trial that wrapped up this month, &#8230; <a title=\"Tiny Eye Chip Lets Blind Patients Read Again\" class=\"read-more\" href=\"https:\/\/scienceblog.com\/neuroedge\/2025\/10\/20\/tiny-eye-chip-lets-blind-patients-read-again\/\" aria-label=\"Read more about Tiny Eye Chip Lets Blind Patients Read Again\">Read more<\/a><\/p>\n","protected":false},"author":1297,"featured_media":256,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-255","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.4 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Tiny Eye Chip Lets Blind Patients Read Again - NeuroEdge<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/scienceblog.com\/neuroedge\/2025\/10\/20\/tiny-eye-chip-lets-blind-patients-read-again\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tiny Eye Chip Lets Blind Patients Read Again\" \/>\n<meta property=\"og:description\" content=\"A wireless implant no bigger than a grain of rice has restored reading vision to people who had lost their central sight to macular degeneration, a condition that affects over 5 million people worldwide and ranks as the leading cause of irreversible blindness in older adults. 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The device, made from interwoven tellurium nanowires, represents a significant step forward in artificial vision technology and could\u2026","rel":"","context":"In &quot;Technology&quot;","block_context":{"text":"Technology","link":"https:\/\/scienceblog.com\/neuroedge\/category\/technology\/"},"img":{"alt_text":"Tellurium exhibits broad-spectrum optical absorption, spanning visible to infrared light (top left). When implanted subretinally, a tellurium nanowire prosthesis can replace damaged photoreceptors and generate photocurrents that stimulate remaining retinal circuits (bottom left) and activate the visual cortex (top right). Thanks to engineered asymmetry and nanowire network structure, these devices produce large, spontaneous photocurrents without external bias and allow for minimally invasive implantation (bottom right). 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Johns Hopkins researchers have developed a liquid biopsy technique that identifies brain cancers with unprecedented accuracy, potentially transforming how these deadly tumors are diagnosed. Brain cancer detection\u2026","rel":"","context":"In &quot;Brain Health&quot;","block_context":{"text":"Brain Health","link":"https:\/\/scienceblog.com\/neuroedge\/category\/brain-health\/"},"img":{"alt_text":"Release of cell-free DNA and altered blood cells in patients with cancer.","src":"https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/04\/ai-liquid-biopsy-brain-tumor.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/04\/ai-liquid-biopsy-brain-tumor.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/04\/ai-liquid-biopsy-brain-tumor.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/04\/ai-liquid-biopsy-brain-tumor.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":175,"url":"https:\/\/scienceblog.com\/neuroedge\/2025\/05\/22\/ai-learns-to-connect-sight-and-sound-like-humans-do\/","url_meta":{"origin":255,"position":2},"title":"AI Learns to Connect Sight and Sound Like Humans Do","author":"NeuroEdge","date":"May 22, 2025","format":false,"excerpt":"Artificial intelligence systems are getting better at mimicking how humans naturally connect what they see with what they hear. MIT researchers have developed a new machine-learning approach that helps AI models automatically match corresponding audio and visual information from video clips\u2014without needing human labels to guide the process. The breakthrough\u2026","rel":"","context":"In &quot;Automation &amp; Efficiency&quot;","block_context":{"text":"Automation &amp; Efficiency","link":"https:\/\/scienceblog.com\/neuroedge\/category\/automation-efficiency\/"},"img":{"alt_text":"Illustration of Asian woman cellist","src":"https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/05\/MIT-AV-Learning-01-press_0.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/05\/MIT-AV-Learning-01-press_0.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/05\/MIT-AV-Learning-01-press_0.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/05\/MIT-AV-Learning-01-press_0.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":252,"url":"https:\/\/scienceblog.com\/neuroedge\/2025\/10\/15\/ai-system-finds-crucial-clues-for-diagnoses-in-electronic-health-records\/","url_meta":{"origin":255,"position":3},"title":"AI System Finds Crucial Clues For Diagnoses In Electronic Health Records","author":"NeuroEdge","date":"October 15, 2025","format":false,"excerpt":"In hospitals where seconds matter, physicians often face a data paradox: vast electronic records but little time to extract meaning. Researchers at the Icahn School of Medicine at Mount Sinai have now developed an artificial intelligence system that transforms this flood of information into structured insight. The tool, called InfEHR,\u2026","rel":"","context":"In &quot;Automation &amp; Efficiency&quot;","block_context":{"text":"Automation &amp; Efficiency","link":"https:\/\/scienceblog.com\/neuroedge\/category\/automation-efficiency\/"},"img":{"alt_text":"clinician carrying a health record","src":"https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/10\/pexels-karolina-grabowska-6627823.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/10\/pexels-karolina-grabowska-6627823.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/10\/pexels-karolina-grabowska-6627823.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/10\/pexels-karolina-grabowska-6627823.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":318,"url":"https:\/\/scienceblog.com\/neuroedge\/2026\/04\/16\/alzheimers-drugs-clear-the-plaques-but-leave-patients-no-better-off\/","url_meta":{"origin":255,"position":4},"title":"Alzheimer&#8217;s Drugs Clear the Plaques but Leave Patients No Better Off","author":"NeuroEdge","date":"April 16, 2026","format":false,"excerpt":"The brain scans look unambiguous. After 18 months of treatment, the amyloid plaques that riddle the brains of early Alzheimer's patients are visibly reduced, sometimes dramatically so. The drug is doing exactly what it was designed to do: hunting down those sticky protein deposits and clearing them away. So why\u2026","rel":"","context":"In &quot;Brain Health&quot;","block_context":{"text":"Brain Health","link":"https:\/\/scienceblog.com\/neuroedge\/category\/brain-health\/"},"img":{"alt_text":"Drugs that target amyloid beta proteins in the brain likely have no clinically meaningful positive effects, while increasing the risk of bleeding and swelling in the brain, a new Cochrane review has found.","src":"https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2026\/04\/iStock-862018022.jpg.webp?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2026\/04\/iStock-862018022.jpg.webp?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2026\/04\/iStock-862018022.jpg.webp?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2026\/04\/iStock-862018022.jpg.webp?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":69,"url":"https:\/\/scienceblog.com\/neuroedge\/2025\/04\/23\/u-s-dementia-costs-approach-trillion-dollar-mark\/","url_meta":{"origin":255,"position":5},"title":"U.S. Dementia Costs Approach Trillion Dollar Mark","author":"NeuroEdge","date":"April 23, 2025","format":false,"excerpt":"The hidden financial tsunami of dementia will crash across America with unprecedented force this year, reaching $781 billion in total economic burden, according to new research from the University of Southern California. This staggering figure, revealed yesterday in the first of planned annual estimates from a multidisciplinary USC-led team, goes\u2026","rel":"","context":"In &quot;Brain Health&quot;","block_context":{"text":"Brain Health","link":"https:\/\/scienceblog.com\/neuroedge\/category\/brain-health\/"},"img":{"alt_text":"Elderly woman with dementia","src":"https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/04\/civilian-service-63620_1280.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/04\/civilian-service-63620_1280.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/04\/civilian-service-63620_1280.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/scienceblog.com\/neuroedge\/wp-content\/uploads\/sites\/14\/2025\/04\/civilian-service-63620_1280.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"_links":{"self":[{"href":"https:\/\/scienceblog.com\/neuroedge\/wp-json\/wp\/v2\/posts\/255","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/scienceblog.com\/neuroedge\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/scienceblog.com\/neuroedge\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/scienceblog.com\/neuroedge\/wp-json\/wp\/v2\/users\/1297"}],"replies":[{"embeddable":true,"href":"https:\/\/scienceblog.com\/neuroedge\/wp-json\/wp\/v2\/comments?post=255"}],"version-history":[{"count":1,"href":"https:\/\/scienceblog.com\/neuroedge\/wp-json\/wp\/v2\/posts\/255\/revisions"}],"predecessor-version":[{"id":257,"href":"https:\/\/scienceblog.com\/neuroedge\/wp-json\/wp\/v2\/posts\/255\/revisions\/257"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/scienceblog.com\/neuroedge\/wp-json\/wp\/v2\/media\/256"}],"wp:attachment":[{"href":"https:\/\/scienceblog.com\/neuroedge\/wp-json\/wp\/v2\/media?parent=255"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scienceblog.com\/neuroedge\/wp-json\/wp\/v2\/categories?post=255"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scienceblog.com\/neuroedge\/wp-json\/wp\/v2\/tags?post=255"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}