A daily 1-hour increment in digital screen time was associated with 21 per cent higher odds of myopia (nearsightedness) Researchers said the risk increased significantly from 1-4 hours of screen time and then went up more gradually. No association was found with exposure under 1 hour, suggesting a potential safety threshold. The authors say these findings can offer guidance to clinicians addressing the \”myopia pandemic,\” they said. The team reviewed data from 45 investigations that looked at the association between screen time. and nearsightedness in more than 335,000 participants from toddlers to young adults. The study was published in JAMA Network Open, a journal of the American Association for the Advancement of Sciences and the American College of Obstetricians and Gynaecologists. It was based on a systematic review and dose-response meta-analysis of more than 45 investigations from 45 different research centres in the U.S., Canada, Australia and New Zealand. It is the first study of its kind to look at the link between digital screens and myopia.
