Summary
Research suggests that increased screen time raises the risk of myopia in children.
A Korean meta-analysis of 45 studies involving 335,524 participants found that each hour of daily screen exposure raises the odds of developing myopia by 21%, with a 97% increase after four hours.
Experts warn that limited screen use and more time outdoors are essential, as the “safety threshold” appears to be below one hour per day.
However, study limitations prevent proving causality, though reduced outdoor exposure is likely a key contributing factor.
It’s never been about “closeness” it’s sun exposure https://www.nature.com/articles/s41598-021-85825-y
More time with screens means less time outside, shocker!
Thanks for that! I knew there was something I was forgetting about but couldn’t pin down what it was without rabbit-holing myself. Could have sworn either that or another study mentioned lack of near-far focus changes as another contributor, but I could be mistaken.