{"id":2899,"date":"2023-09-25T09:22:39","date_gmt":"2023-09-25T08:22:39","guid":{"rendered":"https:\/\/springerhealthcare.nl\/france\/?p=2899"},"modified":"2023-09-25T11:23:44","modified_gmt":"2023-09-25T10:23:44","slug":"do-blue-light-glasses-help-with-eyestrain","status":"publish","type":"post","link":"https:\/\/springerhealthplus.nl\/shmigrate\/do-blue-light-glasses-help-with-eyestrain\/","title":{"rendered":"Do Blue-Light Glasses Help with Eyestrain?"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row full_width=&#8221;stretch_row&#8221; content_placement=&#8221;middle&#8221; css=&#8221;.vc_custom_1663187695627{padding-bottom: 37px !important;background-image: url(http:\/\/springerhealthcare.nl\/wp-content\/uploads\/sites\/24\/2022\/09\/science_connect_back.png?id=2486) !important;background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}&#8221; el_class=&#8221;sciencetitle&#8221;][vc_column][vc_custom_heading text=&#8221;Science Connect&#8221; font_container=&#8221;tag:h2|text_align:left|color:%23ffffff&#8221; use_theme_fonts=&#8221;yes&#8221; link=&#8221;url:https%3A%2F%2Fspringerhealthcare.nl%2Ffrance%2Fscience-connect-september-2023%2F&#8221;][vc_column_text css=&#8221;.vc_custom_1663186747780{margin-bottom: 40px !important;}&#8221;]<span style=\"color: #ffffff; font-size: 24px; line-height: 29px;\">A Springer Healthcare Initiative For Pharma Professionals<\/span>[\/vc_column_text][vc_column_text]<span style=\"color: #ee7d11; font-size: 28px; font-weight: 400; letter-spacing: 2px;\">SEPTEMBER 2023<br \/>\n<\/span>[\/vc_column_text][\/vc_column][\/vc_row][vc_row css=&#8221;.vc_custom_1538651642953{padding-top: 75px !important;}&#8221;][vc_column width=&#8221;3\/4&#8243; css=&#8221;.vc_custom_1538657061395{border-right-width: 1px !important;padding-top: 0px !important;border-right-color: #8faec1 !important;border-right-style: solid !important;}&#8221;][vc_custom_heading source=&#8221;post_title&#8221; font_container=&#8221;tag:h1|font_size:40px|text_align:left|line_height:60px&#8221; google_fonts=&#8221;font_family:Merriweather%3Aregular%2Citalic|font_style:700%20regular%3A700%3Anormal&#8221; el_class=&#8221;title&#8221; css=&#8221;.vc_custom_1664358136969{margin-bottom: 30px !important;}&#8221;][vc_column_text css=&#8221;.vc_custom_1686833173052{padding-bottom: 0px !important;}&#8221;]<span style=\"font-size: 18pt;\"><strong>An analysis of previous trials suggests blue-light-filtering lenses may not reduce eyestrain or sleep problems<\/strong><\/span>[\/vc_column_text][vc_column_text el_class=&#8221;intro-box&#8221;]<span style=\"font-size: 16pt;\">By Karen Kwon<\/span>[\/vc_column_text]<div class=\"thegem-te-post-featured-image featured-image--default featured-image--left hero-img thegem-custom-6a68b986176f58997\"> <div class=\"post-featured-image\"> <img src=\"https:\/\/springerhealthplus.nl\/shmigrate\/wp-content\/uploads\/sites\/24\/2023\/09\/ADAA8641-4A8C-4F60-A71507760D828D9D_source.webp\" width=\"690\" height=\"460\" class=\"img-responsive\" alt=\"do-blue-light-glasses-help-with-eyestrain\" > <\/div> <\/div>[vc_column_text css=&#8221;.vc_custom_1689357004274{margin-bottom: 30px !important;}&#8221; el_class=&#8221;sc-img-caption&#8221;] Credit: banjongseal324\/Getty Images[\/vc_column_text][vc_column_text]<p>Blue-light-filtering glasses have become an increasingly popular solution for shielding our eyes from electronic screens\u2019 near-inescapable glow\u2014light that is commonly associated with\u00a0<a href=\"https:\/\/health.ucdavis.edu\/blog\/cultivating-health\/blue-light-effects-on-your-eyes-sleep-and-health\/2022\/08\" target=\"_blank\" rel=\"noopener\">eyestrain<\/a>\u00a0and\u00a0<a href=\"http:\/\/scientificamerican.com\/article\/q-a-why-is-blue-light-before-bedtime-bad-for-sleep\/\" target=\"_blank\" rel=\"noopener\">poor sleep<\/a>. In recent years they\u2019ve even become fashion statements that are endorsed by\u00a0<a href=\"https:\/\/www.usmagazine.com\/stylish\/pictures\/kylie-jenners-oversized-thin-eyeglasses-shop-the-look\/\" target=\"_blank\" rel=\"noopener\">celebrities<\/a>\u00a0and ranked in\u00a0<a href=\"https:\/\/www.wsj.com\/buyside\/wellness\/best-blue-light-blocking-glasses-01675457143\" target=\"_blank\" rel=\"noopener\">style guides<\/a>. But a recent review paper shows such lenses might not be as effective as people think.<\/p>\n<p>The paper, published last week in the\u00a0<em>Cochrane Database of Systematic Reviews,<\/em>\u00a0analyzed data from previous trials that studied how blue-light-filtering lenses\u00a0<a href=\"https:\/\/www.cochranelibrary.com\/cdsr\/doi\/10.1002\/14651858.CD013244.pub2\/full\" target=\"_blank\" rel=\"noopener\">affect vision fatigue, sleep quality and eye health<\/a>. The study\u2019s authors found that wearing blue-light filters does not reduce the eyestrain people feel after using computers. The results were inconclusive on whether wearing these specialized lenses before bedtime improves sleep quality.<\/p>\n<p>\u201cIt\u2019s an excellent review,\u201d says Mark Rosenfield, a professor at the State University of New York College of Optometry, who was not involved in the study. \u201cThe conclusions are no surprise at all&#8230;. There have been a number of studies that have found exactly the same thing, that there\u2019s just no evidence that blue-blocking lenses have any effect on eyestrain.\u201d He adds that the new review reinforces the fact that there is virtually no evidence that blue-blocking lenses affect eyestrain despite them being specifically marketed for that purpose.<\/p>\n<p>Studies have shown high prescription rates for blue-light-filtering eyewear in several countries, including\u00a0<a href=\"https:\/\/doi.org\/10.1080\/08164622.2023.2215380\" target=\"_blank\" rel=\"noopener\">India<\/a>,\u00a0<a href=\"https:\/\/doi.org\/10.1111\/opo.12887\" target=\"_blank\" rel=\"noopener\">the U.K.<\/a>\u00a0and Australia. In 2019 researchers at the University of Melbourne surveyed optometrists in Australia and found that\u00a0<a href=\"https:\/\/doi.org\/10.1111\/opo.12615\" target=\"_blank\" rel=\"noopener\">about 75 percent of them<\/a>\u00a0prescribed blue-light-blocking glasses in their clinical practice. Laura Downie, an associate professor of optometry and vision sciences at the University of Melbourne and co-author of the 2019 survey, decided to further investigate the quality of existing evidence on the eyewear\u2019s ability to improve eyestrain, poor sleep or impaired vision from using digital devices.<\/p>\n<h2>EYE HEALTH AND VISION FATIGUE<\/h2>\n<p>For their new review, Downie and her colleagues identified 17 randomized controlled trials from six countries. Studies had from five to 156 participants and ran from less than a day to five weeks. The analysis of the trials showed that there is no short-term advantage to using blue-light-filtering spectacles for reducing vision fatigue, compared with standard clear lenses. Only one of the studies examined the impact of blue-light-filtering glasses on eyesight, and it suggested that there was little to no effect. The researchers also couldn\u2019t draw conclusions about the lenses\u2019 impact on other eye health conditions, such as retinal damage, because none of the included trials studied such outcomes.<\/p>\n<p>Despite popular belief that blue light causes or worsens eyestrain, Rosenfield thinks the connection is weak. The biggest source of blue light is the sun; digital devices\u2019 screens emit less than 1 percent of the amount of blue light that people get from solar rays. Plus, there\u2019s no known physiological mechanism that links blue light to eye fatigue, he says.<\/p>\n<p>The strain we may feel while staring at our phone or computer screen too long is likely caused by multiple factors, such as bad habits or underlying conditions, Downie says. She and Rosenfield both argue that how we interact with digital devices contributes more to eyestrain than screens\u2019 blue light does. Changing the frequency and duration of screen usage and distancing one\u2019s eyes from the screens might be more important in reducing discomfort, Downie says. She adds that people who experience eyestrain should see a doctor to assess whether they have an underlying health issue such as farsightedness or dry eye disease.<\/p>\n<h2>SLEEP ISSUES<\/h2>\n<p>Poor sleep has also been heavily tied to exposure to blue light from screens. Previous studies have indicated that late-night device usage\u00a0<a href=\"https:\/\/www.scientificamerican.com\/article\/blue-leds-light-up-your-brain\/\" target=\"_blank\" rel=\"noopener\">disrupts sleep patterns<\/a>, Rosenfield says. Blue light is known to interfere with the release of melatonin, the hormone that sends a sleep signal to the brain. This has led researchers to link sleep cycle disruptions to blue light.<\/p>\n<p>But Downie and her team\u2019s analysis revealed that filtering out blue light before bed might not really help. Although six of the trials studied whether wearing blue-light-filtering lenses before bedtime affected sleep quality, the findings from the trials were inconsistent. Three of the studies reported a significant improvement in sleep quality with blue-light-filtering lenses, while the other three reported no significant difference between the filter-wearing group and the control group. The participants were also mostly people with sleep disorders. Downie and her colleagues couldn\u2019t draw any conclusions about whether blue-light-filtering lenses are useful for the general adult population.<\/p>\n<p>Another option for improving sleep could be to activate the \u201cnight shift\u201d or \u201cdark mode\u201d available on many smartphones, Rosenfield says. These modes prompt the screens to emit warmer colors, reduce glare and lower blue-light emissions. Whether this setting helps with one\u2019s sleep more than the specialized glasses do is relatively unknown, however.<\/p>\n<p>Rosenfield says more studies are needed on blue light\u2014and on filters, more broadly\u2014to understand the impact on eye care. For instance, more information is needed on whether certain wavelengths of blue light are more harmful than others, Rosenfield says. Researchers also might consider testing blue-light-filtering glasses that block out more of it.<\/p>\n<p>As for using blue-light-filtering eyeglasses for eye health, for now, Rosenfield says, \u201cthere\u2019s nothing to support people buying them.\u201d<\/p>\n[\/vc_column_text][vc_column_text]\u00a9 2023 SCIENTIFIC AMERICAN, A DIVISION OF SPRINGER NATURE AMERICA, INC.[\/vc_column_text][vc_column_text]<\/p>\n<h3>About the Author(s)<\/h3>\n<p><p><strong>Karen Kwon<\/strong>\u00a0is a science journalist and editor based in the Washington D.C. area. She was a 2020 AAAS Mass Media Fellow at\u00a0<em>Scientific American<\/em>.<\/p>\n[\/vc_column_text][\/vc_column][vc_column width=&#8221;1\/4&#8243; css=&#8221;.vc_custom_1538657003956{padding-top: 0px !important;padding-bottom: 0px !important;}&#8221;][vc_custom_heading text=&#8221;ISSUES&#8221; font_container=&#8221;tag:h3|font_size:12px|text_align:left|color:%23333333|line_height:18px&#8221; use_theme_fonts=&#8221;yes&#8221; el_class=&#8221;titlewidget&#8221;][vc_column_text el_class=&#8221;columnflex&#8221; css=&#8221;.vc_custom_1664404002021{margin-bottom: 40px !important;}&#8221;]<p><a href=\"\/science-connect-october-2023\/\">October 2023<\/a><\/p>\r\n<p><a href=\"\/science-connect-september-2023\/\">September 2023<\/a><\/p>\r\n<p><a href=\"\/science-connect-august-2023\/\">August 2023<\/a><\/p>[\/vc_column_text][vc_custom_heading text=&#8221;OTHER ARTICLES IN THIS ISSUE&#8221; font_container=&#8221;tag:h3|font_size:12px|text_align:left|color:%23333333|line_height:18px&#8221; use_theme_fonts=&#8221;yes&#8221; el_class=&#8221;titlewidget&#8221; css=&#8221;.vc_custom_1674576179369{margin-bottom: 15px !important;}&#8221;][vc_basic_grid post_type=&#8221;post&#8221; max_items=&#8221;-1&#8243; style=&#8221;load-more&#8221; items_per_page=&#8221;4&#8243; element_width=&#8221;12&#8243; orderby=&#8221;rand&#8221; item=&#8221;538&#8243; grid_id=&#8221;vc_gid:1695376300406-57b29906-d9de-3&#8243; taxonomies=&#8221;31&#8243;][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"An analysis of previous trials suggests blue-light-filtering lenses may not reduce eyestrain or sleep problems.<a class=\"more\" href=\"https:\/\/springerhealthplus.nl\/shmigrate\/do-blue-light-glasses-help-with-eyestrain\/\">  ...more<\/a>","protected":false},"author":29,"featured_media":2900,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[7],"tags":[30,31],"class_list":["post-2899","post","type-post","status-publish","format-standard","has-post-thumbnail","category-science-connect","tag-scientific-american","tag-september-2023"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Do Blue-Light Glasses Help with Eyestrain? 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