Experiment with a different screen and ambient brightness level everyday till you find a combination that's most comfortable for your eyes. For me, it is keepin

Experiment with a different screen and ambient brightness level everyday till you find a combination that's most comfortable for your eyes. For me, it is keeping displays on their lowest brightness level + no bright white lights around. Been doing this from 2+ decades now, and spent hours daily in front of every kind of display including 45 Hz bulky CRT monitors. Only time I've had eye pain was when there were bright white ambient lighting around.