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But it does has an effect on nearsightedness. Since the seventies nearsightedness has become an epedemic because we are reading more and more. So it does not

by pasta 8y ago

But it does has an effect on nearsightedness. Since the seventies nearsightedness has become an epedemic because we are reading more and more. So it does not only apply to screen time but more general: reading time.

dudul 8y ago
That's interesting. Do you have a link to a study stating this? I also thought nearsightedness increased dramatically mostly due to lack of outdoor time.
Retric 8y ago
Nearsighted apparently relates to lack of UV exposure. It’s time spend inside often in school that’s the issue. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5233810/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5233810/
- dudul 8y ago
  That's also what I thought, but for some reason I got downvoted for it :)