Why/Is it bad to play on comp/ watch tv when the lights if off/dark?

Question

Like playing computer when the room lights is off. or watching movie wif the lights off.

Answer 1

The human eye isn't evolved to stay focused on a single light source for a long period, dark or not. People are mostly made to be out during the daytime, when there's a moderate amoutn of light coming from everything.

For the same reason that it's unpleasant to look into the Sun, it can be bad for your eyes to stare at a monitor in the total dark for a long time.

It's better to have at least a dim lightsource (like a nightlight, maybe) in the room in addition to the monitor, so that your eyes do not dialate too much because there's dark all around you EXCEPT for this one source of the screen.

Answer 2

makes your eyes work more, which can damage your vision.

Answer 3

I think maybe uts b/c your eyes arent sure whether to focus on seeing i the dark or the light and it strains them