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YSK: even modest increases in time spent outdoors significantly reduces a child's odds of developing short-sightedness (lemmy.ca)
submitted 6 months ago by to c/youshouldknow@lemmy.world
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As one meta-analysis put it:

It’s estimated that an increase of one hour per day of outdoor time could reduce the occurrence of myopia in children by 45%.

Make sure your kids spend time outside, folks!

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[–] [S] 2 points 6 months ago

The 80-90% claim seems to be repeated in various areas on the internet, including by the American Academy of Ophthalmology, which I assume to be reputable:

Over recent decades, the prevalence of myopia has skyrocketed, particularly in Asia. In countries like China, Japan, Singapore, South Korea, and Japan, up to 80-90% of teenagers and young adults are now myopic.

Of course these local averages are still consistent with a lower global average

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