They actually have a name for this and it is called "Computer Vision Syndrome". Basically, you strain your eyes and can get blurred or double vision. If you want to prevent this they make glasses for people who use computers a lot. Computer glasses do some of the focusing for you so that your eye muscles can relax more. You can also prevent this by taking regular breaks during computer use.
You will be blind and fall
Sometimes it is heredity while there are others who stare at the sun too long and didn't know it was bad to stare at the sun
You stare at them too long and they turn away because you were either hideously ugly or you were giving them the pedofile look.
Leave it on too long...
low image quality
Prolonged staring at a mirror can lead to a psychological phenomenon called the Troxler effect, where peripheral objects fade away. This can sometimes result in visual distortions or hallucinations where your own reflection may appear distorted or even start to change. However, these effects are temporary and can be reduced by taking breaks or refocusing your gaze.
He probably likes you too.
if you stare at himhell think you like him!!
If you stare at a computer screen for too long, you can get headaches and possibly some vision problems.
when your feeling mad,hatress or ugly vibes. the way you stare at a person too long and not smile it can be jealousy.
Staring too long into the abyss can lead to a sense of despair, hopelessness, and a loss of perspective on life. It can also trigger feelings of anxiety, depression, and existential dread.
if they stare too much