Hehe, I have same- I'll be writing like 3 essays a day. For your concerns, there are several things you must consider. First, it depends largely on the monitor and how it's configured. An example is this pos 15" CRT that I use w/ my comp makes my eyes begin hurting literally after 5 minutes, (feels like the muscles hurt as well as a burning and a pressure behind my eyes). 3 hours in front of it will do u in- slight headache + diziness and a sikly feeling, plus your eyes will hurt like hell for the next few days. My dad tells me bs (he never uses this comp) which is why I'm still stuck w/ this 7 year old thing. In contrast, my freind has a 19" CRT from Sony- relatively new actually, and I can sit in front of it all day and not feel a thing. When I had my TFT7020, it hurt my eyes cause contrast and brightness weren't set well, and colors were pretty garish. I adjusted it and finally it was ok, but I then returned it for several reasons. There is one big thing that worries me about LCD's- their brightness. The human eye's comfort level is at 40 cd/m^2, and CRT's are usually around 100 cd/m^2 at max. LCD's go up to and above in some cases 300cd/m^2 and it u tone it down, picture is bad. So that can cause some serious eyestrain. I wouldn't worry about radiation, as it isn't anything serious. Finally, eyestrain comes inevitably from lcd's and crt's in that your eye constantly keeps going back and forth focusing b/c there isn't a solid object for it to focus on. It all really depends how mcuh u use the monitor. I'm sure Gosharks can give a few more arguments as well.
My frog asked me for a straw...dunno what happened his ass all over the place