[sndean]

Not sure about the correlation with being introverted, but the sunlight-nearsightedness correlation is pretty well established [0], specifically light in the near ultraviolet range [1].

There was a really interesting article on HN years ago about this, but I can't find it. The researchers suggested this effect was a good reason to mandate outdoor recess for children during the school day – maybe in Australia?

[0] https://insights.osu.edu/health/myopia

[1] https://www.thelancet.com/journals/ebiom/article/PIIS2352-39...