[scarface74]

I was looking for research to say that is a myth. But from a trusted source: The American Optometric Association:

https://www.aoa.org/patients-and-public/eye-and-vision-probl...

[DuskStar]

I think there's more evidence that it's lack of bright light, not an excess of screen time, that can cause nearsightedness.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5976264/