{"id":101659,"date":"2026-07-03T18:49:33","date_gmt":"2026-07-03T18:49:33","guid":{"rendered":"https:\/\/youzum.net\/a-device-that-revives-eyeballs-from-dead-donors-could-make-eye-transplants-possible\/"},"modified":"2026-07-03T18:49:33","modified_gmt":"2026-07-03T18:49:33","slug":"a-device-that-revives-eyeballs-from-dead-donors-could-make-eye-transplants-possible","status":"publish","type":"post","link":"https:\/\/youzum.net\/fr\/a-device-that-revives-eyeballs-from-dead-donors-could-make-eye-transplants-possible\/","title":{"rendered":"\u00a0A device that revives eyeballs from dead donors could make eye transplants possible"},"content":{"rendered":"<div data-chronoton-summary=\"&lt;ul&gt;&lt;br&gt;&lt;li&gt;&lt;strong&gt;A device that keeps eyes alive:&lt;\/strong&gt; Researchers have built a device that pumps oxygen-rich fluid through a removed eyeball's artery, slowing the rapid degeneration that makes whole-eye transplants so difficult. Pig eyes kept inside it stayed viable for up to 10 hours.&lt;\/li&gt;&lt;br&gt;&lt;li&gt;&lt;strong&gt;Dead eyes that can still &quot;see&quot;:&lt;\/strong&gt; Untreated pig eyes lost the ability to respond to light the moment they were removed \u2014 but after just 15 minutes of perfusion inside the device, that ability came back.&lt;\/li&gt;&lt;br&gt;&lt;li&gt;&lt;strong&gt;Human eyes next:&lt;\/strong&gt; The team tested the device on eyes from six deceased donors, and found the perfused eyes preserved their retinas significantly better than untreated ones \u2014 a promising early sign for eventual transplantation.&lt;\/li&gt;&lt;br&gt;&lt;li&gt;&lt;strong&gt;A long road ahead:&lt;\/strong&gt; Whether eyes treated this way could actually restore sight won't be known until one is successfully transplanted \u2014 something that has never yet worked in a human patient.&lt;\/li&gt;&lt;br&gt;&lt;\/ul&gt;\" data-chronoton-post-id=\"1140148\" data-chronoton-expand-collapse=\"1\" data-chronoton-analytics-enabled=\"1\"><\/div>\n<p>It\u2019s not easy to transplant a whole human eye. The surgery is difficult. And the eyes themselves start to degenerate as soon as they\u2019ve left the body. When surgeons <a href=\"https:\/\/nyulangone.org\/news\/worlds-first-whole-eye-partial-face-transplant-recipient-achieves-remarkable-recovery-viable-eye-one-year-after-landmark-surgery#:~:text=A%20surgical%20team%20at%20NYU,to%20daily%20life%20in%20Arkansas.\">attempted it a few years ago<\/a>, the newly-transplanted eye wasn\u2019t able to see.<\/p>\n<p>But researchers believe they might have a solution: a device that maintains and revives freshly removed eyeballs using a technique called perfusion. Perfusion works by <a href=\"https:\/\/www.technologyreview.com\/2026\/03\/28\/1134766\/womans-uterus-kept-alive-outside-the-body-first\/\">providing surgically-removed organs with some of the oxygen and nutrients<\/a> they typically get when they\u2019re inside a body. Treated eyes don\u2019t degrade as quickly, and appear to retain the ability to transmit electrical signals, and potentially see. The device could one day make eye transplantations a viable possibility.<\/p>\n<p>\u201cIt\u2019s really cool,\u201d says Shannon Tessier at Massachusetts General Hospital, who was not involved in the research but studies perfusion of other organs. \u201cIt could be a new frontier for retina preservation.\u201d<\/p>\n<p>Pia Cosma at the Centre for Genomic Regulation at the Barcelona Institute of Science and Technology in Spain and her colleagues have spent years developing their device. The Eye-in-a-Care-Box (ECaBox), as they call it, delivers an oxygen-rich supply of fluid through the artery that normally supplies the eye with blood.<\/p>\n<p>The eye itself sits on a \u201cbed,\u201d and excess fluids are drained away. And while the device itself is sealed to maintain a specific temperature and pressure, a clear window on its side allows researchers to study and image the eye while it\u2019s inside.<\/p>\n<p>Cosma and her colleagues started experimenting with pig eyes, which are anatomically similar to human eyes but easier to get hold of (the team got theirs from a local slaughterhouse).<\/p>\n<p>Pig eyes that are kept at room temperature outside of the device start to degenerate pretty quickly. The team found that cells in the eye shrank, and the eyes started to lose their structure. Cooling the organs didn\u2019t help preserve them, either\u2014the eyes degenerated within 24 hours even when they were kept at 4\u00b0C (39\u00b0F).<\/p>\n<p>But eyes kept in the EcABox fared much better. 24 hours later, tests suggested the prefused eyes were \u201csignificantly more viable\u201d than eyes that hadn\u2019t been maintained in the device.<\/p>\n<p>The perfused eyes also seemed to be able to respond to light, suggesting they might technically be able to see if they were transplanted. Untreated pig eyes lost this ability as soon as they were removed from the animal. But it came back after about 15 minutes of perfusion, according to the scientists behind the work. A few of the treated eyes kept going for 10 hours or more.<\/p>\n<p>Cosma and her colleagues described the work in a <a href=\"https:\/\/www.biorxiv.org\/content\/10.64898\/2026.06.25.733416v1?ct=\">preprint article<\/a> that has not yet been peer reviewed, and did not want to comment on the work.<\/p>\n<p>After success with the pig eyes, the team members then tested their device on human eyes. They first collected 12 eyes from six people who had died. In each case, one of each pair of eyes was put in the device, while the other was not. Again, the perfused eyes did better\u2014and their retinas were preserved.<\/p>\n<p>Cosma and her colleagues hope that their device could offer scientists a new way to study eye treatments\u2014one that doesn\u2019t involve experimenting on living animals. They also hope that, with some improvements, the ECaBox might provide a way to maintain and revive donated human eyes for whole-eye transplantation.<\/p>\n<p>Whole-eye transplants have been attempted in the past, mostly in research animals, with limited success. In May 2023, a team at NYU Langone <a href=\"https:\/\/jamanetwork.com\/journals\/jama\/fullarticle\/2823414\">transplanted an eye along with part of a face<\/a> to a man who had survived a high-voltage electrical accident that resulted in the loss of much of the left side of his face, including his left eye, two years earlier. Although <a href=\"https:\/\/nyulangone.org\/news\/worlds-first-whole-eye-partial-face-transplant-recipient-achieves-remarkable-recovery-viable-eye-one-year-after-landmark-surgery#:~:text=A%20surgical%20team%20at%20NYU,to%20daily%20life%20in%20Arkansas.\">the man recovered well<\/a>, he wasn\u2019t able to see out of the transplanted eye.<\/p>\n<p>We won\u2019t know whether eyes treated in the ECaBox could do any better until they have been transplanted, says Tessier.\u00a0<\/p>\n<p>In the meantime, Cosma and her colleagues plan to use a newer version of their device to collect more human eyes for research. \u201cWe are planning to develop a portable, surgery-room ECaBox to minimize [degradation] in heart-beating donor eyes, when they become available,\u201d they write.<\/p>","protected":false},"excerpt":{"rendered":"<p>It\u2019s not easy to transplant a whole human eye. The surgery is difficult. And the eyes themselves start to degenerate as soon as they\u2019ve left the body. When surgeons attempted it a few years ago, the newly-transplanted eye wasn\u2019t able to see. But researchers believe they might have a solution: a device that maintains and revives freshly removed eyeballs using a technique called perfusion. Perfusion works by providing surgically-removed organs with some of the oxygen and nutrients they typically get when they\u2019re inside a body. Treated eyes don\u2019t degrade as quickly, and appear to retain the ability to transmit electrical signals, and potentially see. The device could one day make eye transplantations a viable possibility. \u201cIt\u2019s really cool,\u201d says Shannon Tessier at Massachusetts General Hospital, who was not involved in the research but studies perfusion of other organs. \u201cIt could be a new frontier for retina preservation.\u201d Pia Cosma at the Centre for Genomic Regulation at the Barcelona Institute of Science and Technology in Spain and her colleagues have spent years developing their device. The Eye-in-a-Care-Box (ECaBox), as they call it, delivers an oxygen-rich supply of fluid through the artery that normally supplies the eye with blood. The eye itself sits on a \u201cbed,\u201d and excess fluids are drained away. And while the device itself is sealed to maintain a specific temperature and pressure, a clear window on its side allows researchers to study and image the eye while it\u2019s inside. Cosma and her colleagues started experimenting with pig eyes, which are anatomically similar to human eyes but easier to get hold of (the team got theirs from a local slaughterhouse). Pig eyes that are kept at room temperature outside of the device start to degenerate pretty quickly. The team found that cells in the eye shrank, and the eyes started to lose their structure. Cooling the organs didn\u2019t help preserve them, either\u2014the eyes degenerated within 24 hours even when they were kept at 4\u00b0C (39\u00b0F). But eyes kept in the EcABox fared much better. 24 hours later, tests suggested the prefused eyes were \u201csignificantly more viable\u201d than eyes that hadn\u2019t been maintained in the device. The perfused eyes also seemed to be able to respond to light, suggesting they might technically be able to see if they were transplanted. Untreated pig eyes lost this ability as soon as they were removed from the animal. But it came back after about 15 minutes of perfusion, according to the scientists behind the work. A few of the treated eyes kept going for 10 hours or more. Cosma and her colleagues described the work in a preprint article that has not yet been peer reviewed, and did not want to comment on the work. After success with the pig eyes, the team members then tested their device on human eyes. They first collected 12 eyes from six people who had died. In each case, one of each pair of eyes was put in the device, while the other was not. Again, the perfused eyes did better\u2014and their retinas were preserved. Cosma and her colleagues hope that their device could offer scientists a new way to study eye treatments\u2014one that doesn\u2019t involve experimenting on living animals. They also hope that, with some improvements, the ECaBox might provide a way to maintain and revive donated human eyes for whole-eye transplantation. Whole-eye transplants have been attempted in the past, mostly in research animals, with limited success. In May 2023, a team at NYU Langone transplanted an eye along with part of a face to a man who had survived a high-voltage electrical accident that resulted in the loss of much of the left side of his face, including his left eye, two years earlier. Although the man recovered well, he wasn\u2019t able to see out of the transplanted eye. We won\u2019t know whether eyes treated in the ECaBox could do any better until they have been transplanted, says Tessier.\u00a0 In the meantime, Cosma and her colleagues plan to use a newer version of their device to collect more human eyes for research. \u201cWe are planning to develop a portable, surgery-room ECaBox to minimize [degradation] in heart-beating donor eyes, when they become available,\u201d they write.<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"pmpro_default_level":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_pvb_checkbox_block_on_post":false,"footnotes":""},"categories":[52,5,7,1],"tags":[],"class_list":["post-101659","post","type-post","status-publish","format-standard","hentry","category-ai-club","category-committee","category-news","category-uncategorized","pmpro-has-access"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3 - 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The surgery is difficult. And the eyes themselves start to degenerate as soon as they\u2019ve left the body. When surgeons attempted it a few years ago, the newly-transplanted eye wasn\u2019t able to see. But researchers believe they might have a solution: a device that maintains and\u2026","_links":{"self":[{"href":"https:\/\/youzum.net\/fr\/wp-json\/wp\/v2\/posts\/101659","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/youzum.net\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/youzum.net\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/youzum.net\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/youzum.net\/fr\/wp-json\/wp\/v2\/comments?post=101659"}],"version-history":[{"count":0,"href":"https:\/\/youzum.net\/fr\/wp-json\/wp\/v2\/posts\/101659\/revisions"}],"wp:attachment":[{"href":"https:\/\/youzum.net\/fr\/wp-json\/wp\/v2\/media?parent=101659"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/youzum.net\/fr\/wp-json\/wp\/v2\/categories?post=101659"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/youzum.net\/fr\/wp-json\/wp\/v2\/tags?post=101659"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}