When I bought my new comptuer, it came with a nice LCD monitor. My understanding is that these LCD's dont refresh. They only refresh the pixel that changes; therefore, they are much much easier on the eyes. I find looking at this flat screen highly tolerable. But the LCD is on the computer downstairs my parents use. I use the newer computer upstairs, but with the old monitor. That monitor is a tube monitor, it's not LCD. I sware there is something about that monitor that is causing my eyes to go bad. I've been using it for a few months now, 4-5, and I think my eyes got very bad. When I was using the LCD for some time, I had no problems. When I switched back, my eyes turned to trash. I don't know what happened, but now I can't even read street signs, you know, those big ones on the beltway..................... I could also read my book with my glasses off from 3 feet away, now I have to press my nose into the pages. Past 1 foot and my eyes become out of focus. I used to be able to take my glasses off and see, but not very sharp. Now I cant even see my hand if I stick it out. Its all a blurry mess... It's not so bad during the day, but at night time it's not good. I bought a new flat screen from dell to replace that old minotor. But I thought I saw something on TV saying that they just cause eye strain, but not irreversible damage. I don't know if its just severe eye strain or not. Sometimes it feels like my eyelids are twitching a little. My glasses are going to be upgraded to telescopes. I hope it goes away soon.........hah yea right........I hope its nothing serious like diabetes. That would not be good.