Comments by "Alexander Sylchuk" (@sshko101) on "China’s Massive Nearsightedness Problem" video.

That paper is too expensive to look, especially if you´re not myopic yourself. My main theory before this knowledge was about strain in your eyes caused by focusing anywhere close for too long, since your eye crystal muscles get relaxed only when you are looking into infinity. My question is whether that paper have checked a possible explanation of bright light theory simply that it could just cause a side effect as people (or chicken in some studies) might start to focus into infinity more often and thus make your muscles to relax due to everything being overexposed in such a bright light and make it really hard to focus? I just read an older Nature article on the subject and there was mentioned an experiment on chicken and that is where I've read about 10000 lux-es and my immediate alternative explanation was: " for hight contrast objects it's ok, but what if when they look onto something like grey or white walls/floor/ceiling - they can only see glowing light which can simply appear to them as looking into the sunset and that could make their eye lense muscles to relax as if there is nothing to focus on".
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It has to be genetic, but only in a sense that those groups of people are more likely to concentrate on some task for way too long. The rest is environment, books, modern electronic devices, games.
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