That was a hunch based on what my optometrist told me about spending too much time focusing on close objects. They told me, "Every 20 minutes look at something 20 feet away for 20 seconds." (to lessen myopia). However I haven't looked it up in the academic literature. So thanks! Here are some I found from a quick search. From my understanding scientists don't actually know if close work actually causes myopia, but they agree that time spent outdoors significantly reduces the development of myopia.
Some researchers think it's light from the sun, which causes the release of dopamine and prevents the eye from elongating. Other researchers are skeptical and think farther distanced objects outside reduces myopia. I don't know if the light from a VR headset would cause the release of dopamine in the same way as sunlight. In any case, it's probably best to limit VR headset use and spend more time outdoors.
Short-sightedness is reaching epidemic proportions. Some scientists think they have found a reason why.
www.nature.com
Nearsightedness (myopia) has become more common around the world recently, mainly because of changes in visual, educational, and recreational behavior. The question arises how the risk of myopia and its progression can be reduced. This would lessen the ...
www.ncbi.nlm.nih.gov