[Jemian]

When you are watching television in a dark room, your eyes must constantly adjust to the different lighting. ... This constant changing level of light makes your eyes work harder, which results in eye strain. Eye strain can result in dry eye syndrome, which is a contributing factor to the development of glaucoma.Oct 17, 2018

[gubamyster]

This constant changing level of light makes your eyes work harder, which results in eye strain.

So my mother was right all that time?

Good thing she also told me to eat lots of carrots.

[Rusty0604]

I didn’t know that.