My history of screen experience goes back some 44 years, which is longer than we have had TV in South Africa. More than half of that period at work (and since the very early eighties home as well) was spent on screens of various qualities and functionalities, everything from 8080s and 8600s with delusions of grandeur, to large mainframes and the whole bang shoot in between, and everything from 300 bits (no, not bytes) per second (not necessarily baud) to crwth-knows-what now. My point? Apart from my decrepitude and the fact that I now have taken to wearing glasses while on line, that eyestrain never figured. I could not understand what the problem was with friends who complained of it (and there were plenty). Then a year or two after I got into PC work I realised that if I got involved in an exciting interactive game (not always if I was the player if things got really exciting), I soon got eyestrain! Now, what follows is not the remark of your friendly corner-shop ophthalmologist, and as far as I can make out my experience, while not unique is not shared by the majority of users, but I think it is of potential use to some people. In all my computer experience I have been emotionally comfortable with hardware, software, and their logic and theory of operation. Whereas many people lean forward when working at the screen, I lounge back, working with my eyes, not actually focussed on infinity (though I think it is a disgrace that our screens do not yet routinely and economically support that) but certainly focussed well past the tip of my cute little snout. In short, I am relaxed, *and so are my eyes*! But obviously I am doing something different with my eyes when playing games. The screens are the actual same screens. I usually am sitting in the same attitude, etc. so dust from the screen isn't a factor. People have suggested all sorts of things, such as that when excited my pupils are more distended or my blink rate is lower. Maybe some of those factors are true, but what it feels like to me (subjectively, I haven't been in a position to test this) is that my ciliary muscles get tired. So??? So, unless your screen or lighting is really lousy, ditto your typeface, colour, layout, size etc really unsuited to your needs, if screen fatigue is a problem, maybe what you need is some well-mamaged relaxation exercises. If what knackers your eyes is games, I am sure you can do the arithmetic! (No, don't mind ME! this is my sympathetic look! ;-) ) Cheers, Jon