While it is true that incidences of myopia are increasing, we don't quite have the evidence to assert that it is due to phone and computer use. Indeed, many studies suggest that the reason might actually be a lack of bright light (i.e. sunlight) and that deliberate exposure to bright light may actually be a good intervention to prevent myopia (see e.g. https://journals.plos.org/plosone/article?id=10.1371/journal..., https://www.nature.com/articles/s41598-018-26635-7, https://iovs.arvojournals.org/article.aspx?articleid=2355431)

Relevant YouTube video about this from SciShow: https://www.youtube.com/watch?v=qwQzTKHIkb4

bright white light or led screens ? ¯\_(ツ)_/¯

From what I remember when I last looked into it: We underestimate how bright sunlight is. Screens just aren't bright enough. They only appear to be bright to us because they are one of the few light sources in indoor environments.

>Don't give people the wrong impression without first asking professional advice as you could do harm by misleading someone.

The irony of posting this after a statement that is patently not supported by any evidence, and is generally thought to be wrong:

>due to phone and computer use.

Word, that sort of claim begs for an associated reference to a study.

> The amount of people being prescribed glasses is growing each year due to phone and computer use.

I have some hope the use of VR gear might start to reverse that trend. The focal plane is normally set a couple meters away from you -- I think six meters for the Quest. Anecdotally, I find it comfortable to look into; it has a 'night' mode that reddens the light, too.

I don't know how provable it is, but I've always heard that nearsightedness may be caused by looking at things that are too close, too often.

Right now there's a concern in that the focal plane is always six meters, but light-field displays will be coming at some point, probably before these become a mass-market product.