{"id":51984,"date":"2025-03-02T02:37:15","date_gmt":"2025-03-02T02:37:15","guid":{"rendered":"https:\/\/greenschoolsgreenfuture.org\/?p=51984"},"modified":"2025-09-12T23:07:14","modified_gmt":"2025-09-12T23:07:14","slug":"screen-time-linked-to-increased-risk-of-nearsightedness-in-children-study-finds","status":"publish","type":"post","link":"https:\/\/greenschoolsgreenfuture.org\/fr\/screen-time-linked-to-increased-risk-of-nearsightedness-in-children-study-finds\/","title":{"rendered":"Screen Time Linked to Increased Risk of Nearsightedness in Children, Study Finds"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"51984\" class=\"elementor elementor-51984\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1069b8f3 e-flex e-con-boxed e-con e-parent\" data-id=\"1069b8f3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3540e1a6 elementor-widget elementor-widget-text-editor\" data-id=\"3540e1a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><em>*originally published in The Epoch Times*<\/em><\/p><p><strong>Even one hour of screen time a day significantly increases the risk of nearsightedness, especially for children, a new study suggests.<\/strong><\/p><p><b>More Screen Time, More Risk<\/b><\/p><p>Researchers found that spending an additional hour per day (past the first) watching screens was associated with a 21 percent increase in the odds of someone developing nearsightedness.<\/p><p>The study analyzed data from 45 different studies involving more than 335,000 participants to find a complex relationship between screen time and nearsightedness risk. The analysis collected data from various digital devices such as smartphones, tablets, gaming consoles, computers, and television sets, which were collectively referred to as digital devices.<\/p><p>The findings of the systematic review and meta-analysis, recently published in\u00a0<a href=\"https:\/\/jamanetwork.com\/journals\/jamanetworkopen\/fullarticle\/10.1001\/jamanetworkopen.2024.60026?guestAccessKey=cacff078-cb7a-4a0b-8fe3-db2961eab263&amp;utm_source=for_the_media&amp;utm_medium=referral&amp;utm_campaign=ftm_links&amp;utm_content=tfl&amp;utm_term=022125\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">JAMA Network Open<\/a>, highlight a growing concern over children\u2019s screen usage.<\/p><p>\u201cAs children increasingly embrace smart devices at younger ages and spend more time on digital screens, there is an urgent need to better understand the association of digital screen time with myopia,\u201d the researchers wrote.<\/p><p>In the United States, estimates show nearsightedness\u00a0<a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC10144975\/#:~:text=In%20the%20United%20States%2C%20the,66%25%20increase%20%5B7%5D.\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">prevalence<\/a>\u00a0to be about 42 percent. Among children specifically, as much as 41 percent of\u00a0<a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC10709769\/#:~:text=Researchers%20have%20provided%20evidence%20that%20residing%20in,with%20a%20higher%20likelihood%20of%20developing%20myopia.&amp;text=Over%20the%202%2Dyear%20period%20from%202021%20to,in%20the%20low%20urbanization%20group%20(Figure%202B).\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">children<\/a>\u00a0in urban areas and 16 percent of children in rural areas are living with the condition.<\/p><p>The results suggest that daily screen time should be limited to less than one hour to potentially reduce the risk of developing nearsightedness.<\/p><p><b>Building on Previous Research<\/b><\/p><p>A previous\u00a0<a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/34625399\/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">meta-analysis<\/a>\u00a0combining data from 11 studies that included 934 participants looking at the relationship between screen time on smart devices (such as smartphones or tablets) and nearsightedness revealed a significant link\u2014time spent on smart devices alone was associated with a 26 percent increase in the odds of developing nearsightedness.<\/p><p>Researchers found that spending an additional hour per day (past the first) watching screens was associated with a 21 percent increase in the odds of someone developing nearsightedness.<\/p><p>The study analyzed data from 45 different studies involving more than 335,000 participants to find a complex relationship between screen time and nearsightedness risk. The analysis collected data from various digital devices such as smartphones, tablets, gaming consoles, computers, and television sets, which were collectively referred to as digital devices.<\/p><p>The findings of the systematic review and meta-analysis, recently published in\u00a0<a href=\"https:\/\/jamanetwork.com\/journals\/jamanetworkopen\/fullarticle\/10.1001\/jamanetworkopen.2024.60026?guestAccessKey=cacff078-cb7a-4a0b-8fe3-db2961eab263&amp;utm_source=for_the_media&amp;utm_medium=referral&amp;utm_campaign=ftm_links&amp;utm_content=tfl&amp;utm_term=022125\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">JAMA Network Open<\/a>, highlight a growing concern over children\u2019s screen usage.<\/p><p>\u201cAs children increasingly embrace smart devices at younger ages and spend more time on digital screens, there is an urgent need to better understand the association of digital screen time with myopia,\u201d the researchers wrote.<\/p><p>In the United States, estimates show nearsightedness\u00a0<a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC10144975\/#:~:text=In%20the%20United%20States%2C%20the,66%25%20increase%20%5B7%5D.\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">prevalence<\/a>\u00a0to be about 42 percent. Among children specifically, as much as 41 percent of\u00a0<a href=\"https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC10709769\/#:~:text=Researchers%20have%20provided%20evidence%20that%20residing%20in,with%20a%20higher%20likelihood%20of%20developing%20myopia.&amp;text=Over%20the%202%2Dyear%20period%20from%202021%20to,in%20the%20low%20urbanization%20group%20(Figure%202B).\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">children<\/a>\u00a0in urban areas and 16 percent of children in rural areas are living with the condition.<\/p><p>The results suggest that daily screen time should be limited to less than one hour to potentially reduce the risk of developing nearsightedness.<\/p><p>When this screen time was combined with computer usage, the odds increased by 77 percent.<\/p><p>However, another\u00a0<a href=\"https:\/\/bmcpublichealth.biomedcentral.com\/articles\/10.1186\/s12889-024-19113-5\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">meta-analysis<\/a>\u00a0that analyzed screen time data separately for different categories found that time spent on computers and televisions was linked to nearsightedness, but time spent on smartphones was not.<\/p><p>The researchers involved in the new study noted that findings such as these highlight a need for more in-depth investigations into the safety threshold for digital device exposure.<\/p><p><b>Why the Increased Risk?<\/b><\/p><p>Nearsightedness occurs when the eye elongates from front to back. This causes light entering the eye to focus in front of the retina rather than directly on it, which makes distant objects appear blurry, optometrist Dr. Meenal Agarwal, owner of Pickering Town Centre Optometric Clinic, Stouffville Family Eye Care, and Promenade Optometric Clinic, told The Epoch Times.<\/p><p>\u201cIt\u2019s counterintuitive,\u201d she said. \u201cBut the theory is that focusing on close objects for extended periods can put stress on the eye\u2019s focusing system, which may influence the shape of the eye, causing it to elongate more than it would naturally.\u201d<\/p><p>She said this applies when looking at anything closer than 22 inches to the face.<\/p><p>When staring at a screen, your eyes are constantly focused on a fixed distance, usually one very close to your face. This prevents the natural switching between focusing on near and far objects that happens in a natural environment. This means your eyes maintain a consistent focus for extended periods, straining the muscles responsible for changing your eye\u2019s focus and potentially contributing to nearsightedness because of the prolonged near focusing effort required.<\/p><p>Agarwal said this increased stress may also prevent the eye from fully relaxing when focusing on distant objects, which could lead to changes in how the eye grows over time.<\/p><p><b>Reducing Myopia Risk<\/b><\/p><p>To reduce children\u2019s risk of developing nearsightedness, Agarwal recommended encouraging kids to spend more time outdoors.<\/p><p>\u201cStudies have found that children who spend more time outdoors tend to have a lower risk of developing myopia,\u201d she said. \u201cThis is because exposure to natural light and focusing on objects at various distances, as we do outdoors, may help prevent myopia.\u201d<\/p><p>Agarwal recommended approximately two hours of outdoor time per day for both children and adults to help prevent or delay the onset of nearsightedness. Reducing near work and taking breaks while doing near work are also very important, she said.<\/p><p>To help relieve the strain of prolonged near work, Agarwal advised following the \u201c20-20-20 rule,\u201d which means taking a 20-second break and looking at something 20 feet away every 20 minutes.<\/p><p>\u201cLastly, if your child is already myopic, consider myopia control options with your eye doctor like myopia control glasses, contact lenses, or treatments like atropine eye drops,\u201d she said. \u201cThese have all been proven to slow the progression of myopia.\u201d<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Even one hour of screen time a day significantly increases the risk of nearsightedness, especially for children, a new study suggests.<\/p>","protected":false},"author":103,"featured_media":51989,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"give_campaign_id":0,"footnotes":""},"categories":[20],"tags":[],"class_list":["post-51984","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news-articles"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Screen Time Linked to Nearsightedness in Children, Study Finds<\/title>\n<meta name=\"description\" content=\"Even one hour of screen time a day significantly increases the risk of nearsightedness, especially for children, a new study suggests.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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