{"id":2081,"date":"2018-11-16T17:20:25","date_gmt":"2018-11-16T17:20:25","guid":{"rendered":"http:\/\/www.phoenixreslabs.com\/?p=2081"},"modified":"2026-04-02T17:51:04","modified_gmt":"2026-04-02T17:51:04","slug":"phoenix-micron-oct-blue-light-study","status":"publish","type":"post","link":"https:\/\/phoenixmicron.com\/de\/phoenix-micron-oct-blue-light-study\/","title":{"rendered":"Fundus and OCT imaging shows that smart phone-like blue light exposure leads to retinal disruption in rats"},"content":{"rendered":"<p>Researchers Lin et al at Taipei Medical University shared an alarming finding that blue light, similar to that emitted by smart phones, can lead to retinal disruption in rats. They used the Phoenix-Micron\u2019s Phoenix MICRON<span class=\"reg-mark half-size\">\u00ae<\/span> fundus camera and the image-guided OCT to demonstrate blood vessel leakage and retinal thinning after intermittent blue light exposure.<\/p>\n<figure id=\"attachment_2086\" aria-describedby=\"caption-attachment-2086\" style=\"width: 300px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/FA-exposure-chart.jpg\"><img decoding=\"async\" class=\"size-medium wp-image-2086 lazyload\" data-src=\"https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/FA-exposure-chart-300x169.jpg\" alt=\"Fluorescein angiography of rats exposed to blue light per day\" width=\"300\" height=\"169\" data-srcset=\"https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/FA-exposure-chart-300x169.jpg 300w, https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/FA-exposure-chart-768x432.jpg 768w, https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/FA-exposure-chart-1024x575.jpg 1024w, https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/FA-exposure-chart.jpg 1381w\" data-sizes=\"(max-width: 300px) 100vw, 300px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 300px; --smush-placeholder-aspect-ratio: 300\/169;\" \/><\/a><figcaption id=\"caption-attachment-2086\" class=\"wp-caption-text\">Figure 1. Fluorescein angiography of rats exposed to 0 hours (a, e, i), 0.5 hours (b, f, j), 1 hour (c, g, k), or 3 hours (d, h, l) of blue light per day at day 0 (a-d), 14 (e-h), and 28 (i-l). At day 14 (h) and 28 (l) of the 3 hours\/day rats, there is clear leakage throughout the retina, and at day 28 (k) for the 1 hour\/day rats.<\/figcaption><\/figure>\n<p>Lin et al first showed reduced viability of the retinal pigment epithelium (RPE) in cell culture when the cells were exposed to blue light. Selected apoptotic pathways were activated, leading to cell damage and death. They then exposed Brown Norway rats to 460 nm blue light at a 150 lux level in four groups: 0 hours, 0.5 hours, 1 hour, and 3 hours per day. Imaging timepoints were at 0 days, 14 days, and 28 days.<\/p>\n<figure id=\"attachment_2087\" aria-describedby=\"caption-attachment-2087\" style=\"width: 300px\" class=\"wp-caption alignright\"><a href=\"https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/fundus-exposure-chart.jpg\"><img decoding=\"async\" class=\"size-medium wp-image-2087 lazyload\" data-src=\"https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/fundus-exposure-chart-300x174.jpg\" alt=\"\" width=\"300\" height=\"174\" data-srcset=\"https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/fundus-exposure-chart-300x174.jpg 300w, https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/fundus-exposure-chart-768x445.jpg 768w, https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/fundus-exposure-chart-1024x593.jpg 1024w, https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/fundus-exposure-chart.jpg 1393w\" data-sizes=\"(max-width: 300px) 100vw, 300px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 300px; --smush-placeholder-aspect-ratio: 300\/174;\" \/><\/a><figcaption id=\"caption-attachment-2087\" class=\"wp-caption-text\">Figure 2. Fundus images shows damage to a rat treated with 3 hours of blue light per day for 28 days (l).<\/figcaption><\/figure>\n<p>Fluorescein angiography taken with the Phoenix MICRON<span class=\"reg-mark half-size\">\u00ae<\/span> fundus camera, which allows crystal clear, live video and still imaging of rodent retinas, shows leakage in the 1 hour of blue light per day rat group at day 28 (Figure 1k). Logically, the 3 hours per day rat group had earlier evidence of leakage at day 14 and 28 (Figure 1h, 1l). Brightfield fundus imaging of the same rats shows some damage of the 3 hour per day rats at day 28 (Figure 2l).<\/p>\n<figure id=\"attachment_2088\" aria-describedby=\"caption-attachment-2088\" style=\"width: 300px\" class=\"wp-caption alignleft\"><a href=\"https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/OCT-exposure-chart.jpg\"><img decoding=\"async\" class=\"size-medium wp-image-2088 lazyload\" data-src=\"https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/OCT-exposure-chart-300x173.jpg\" alt=\"\" width=\"300\" height=\"173\" data-srcset=\"https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/OCT-exposure-chart-300x173.jpg 300w, https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/OCT-exposure-chart-768x442.jpg 768w, https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/OCT-exposure-chart-1024x589.jpg 1024w, https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/OCT-exposure-chart.jpg 1752w\" data-sizes=\"(max-width: 300px) 100vw, 300px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 300px; --smush-placeholder-aspect-ratio: 300\/173;\" \/><\/a><figcaption id=\"caption-attachment-2088\" class=\"wp-caption-text\">Figure 3. OCT images clearly show retinal damage. Rats treated with 1 hour (c, g, k) or 3 hours (d, h, l) of blue light exposure per day show a disordered retina starting at day 14 (h) and increasing in severity at day 28 (k, l). The retinas are thinning and show retinal pigment epithelium (yellow arrows) and choroid disruption.<\/figcaption><\/figure>\n<p>The OCT images show the most dramatic changes. The Phoenix MICRON<span class=\"reg-mark half-size\">\u00ae<\/span> OCT provides high resolution, live OCT imaging with a corresponding fundus image for precise location-specific retinal OCT examination. In the 3 hours of blue light exposure per day rats, the OCT reveals retinal layer and choroid disruption, interneuron layer loss, dim rods and cones, and overall retinal thinning (Figure 3h, 3l). The 1 hour of blue light per day rats showed similar disruption, but at a later time point (Figure 3k). Quantification of the layer thicknesses shown in Figure 4.<\/p>\n<figure id=\"attachment_2085\" aria-describedby=\"caption-attachment-2085\" style=\"width: 300px\" class=\"wp-caption alignright\"><a href=\"https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/bar-graphs-exposure-chart.jpg\"><img decoding=\"async\" class=\"size-medium wp-image-2085 lazyload\" data-src=\"https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/bar-graphs-exposure-chart-300x249.jpg\" alt=\"\" width=\"300\" height=\"249\" data-srcset=\"https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/bar-graphs-exposure-chart-300x249.jpg 300w, https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/bar-graphs-exposure-chart-768x638.jpg 768w, https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/bar-graphs-exposure-chart-1024x851.jpg 1024w, https:\/\/phoenixmicron.com\/wp-content\/uploads\/2018\/11\/bar-graphs-exposure-chart.jpg 1752w\" data-sizes=\"(max-width: 300px) 100vw, 300px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 300px; --smush-placeholder-aspect-ratio: 300\/249;\" \/><\/a><figcaption id=\"caption-attachment-2085\" class=\"wp-caption-text\">Figure 4. Quantification of the 0, 0.5 hours, 1 hour, and 3 hours blue light-treated groups were performed on days 0, 14, and 28.<\/figcaption><\/figure>\n<p>ERG recordings showed decreased a- and b-waves in all groups at 28 days.<\/p>\n<p>Taken together, these data indicate that exposure to blue light similar to that emitted by smart phone screens may lead to retinal degeneration and even, Lin et al postulate, dry-age related macular degeneration.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Researchers Lin et al at Taipei Medical University shared an alarming finding that blue light, similar to that emitted by smart phones, can lead to retinal disruption in rats. They used the Phoenix-Micron\u2019s Phoenix MICRON\u00ae fundus camera and the image-guided OCT to demonstrate blood vessel leakage and retinal thinning after intermittent blue light exposure. Lin [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_themeisle_gutenberg_block_has_review":false,"footnotes":""},"categories":[22,35],"tags":[41,36,42,43,44,45],"class_list":["post-2081","post","type-post","status-publish","format-standard","hentry","category-micron-iv","category-oct","tag-cell-damage","tag-oct","tag-phoenix-micron","tag-phone-light-damage","tag-retinal-pigment-epithelium","tag-rpe"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Fundus and OCT imaging shows that smart phone-like blue light exposure leads to retinal disruption in rats - Phoenix-Micron<\/title>\n<meta name=\"description\" content=\"Using the Phoenix-Micron\u2019s Phoenix MICRON fundus camera and the image-guided OCT they demonistrated blood vessel leakage and retinal thinning after intermittent blue light exposure.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/phoenixmicron.com\/de\/phoenix-micron-oct-blue-light-study\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fundus and OCT imaging shows that smart phone-like blue light exposure leads to retinal disruption in rats - 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