even when my laptop screen on the lowest brightness. i think the solution of this problem is make my laptop screen smaller. so it try to make my game run in windowed mode and i feel better. but some games cannot in windowed mode. after thinking in 3 times i found the solution, to make the resolution 800x600 and the aspect ratio is 'from screen resolution' and it works for my eyes. i was do it in alot of time. but now in 800x600 settings, the screen is bigger like 1280x720 not like in earlier. please the solution