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!

    • cenotaph@piefed.zip
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      22 hours ago

      Then you were likely genetically predetermined to be at least a little myopic, but if you spent less time outside during your developmental phases you would likely be even more nearsighted than you are now.

    • TrackinDaKraken@lemmy.world
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      22 hours ago

      Same for me, I spent most of my free time as a child playing outside. I grew up in California, weather wasn’t a concern, I was outside year-'round. I got my first pair of glasses at age 21. I suspect it’s far more genetic than environmental.

      • SkunkWorkz@lemmy.world
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        18 hours ago

        It’s both. You can just look at the statistics, the number of people with myopia has gone up over the last few decades. If it was just genetics those numbers would have been stable.

        • grue@lemmy.world
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          12 hours ago

          Well, unless nearsighted people were outcompeting people with 20:20 vision, for some reason.