Well the only things I know about is not to game in the dark. It can strain your eyes pretty bad. Not sure about what type of lighting or how much though. Another thing is to take breaks while gaming. Get up and walk around the house for 5 mins or something like that. Looking at other things that are not a screen will help your eyes not strain as much. Look at pictures on the wall next to you or something along those lines. That's about all I know that could help.