this post was submitted on 16 Apr 2024
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[โ€“] [email protected] 3 points 5 months ago (1 children)

We have discovered nearsightedness is caused by a lack of sunshine during childhood. The amount of bright light you're exposed to determines when your eyeballs stop growing/adjusting and if you don't get enough you end up near-sighted.

[โ€“] [email protected] 2 points 5 months ago

That's a factor sometimes, but plenty of people are just genetically nearsighted.