Recently I've had really bad luck with LCD monitors, I owned a Samsung T260 which causes me nothing but heavy eye strain and headaches, now I
own a Samsung P2250 monitor which causes my eyes to be dry and strained fairly quickly.
I'm considering of buying an Alienware 3D monitor (the "23 one) which is 120Hz or the Acer GD235HZ to reduce eyestrain, do you think they indeed offer a reduced eyestrain as it has been on CRT monitors with high refresh rates?
Monitors never refreshed like CRT monitors. While CRTs refraw the entire image constantly which causes flicker. LCDs only redraw certain pixels when it needs to.
If you are getting eye strain because of looking at web pages or text documents. Then refresh rate is probably not your concern.
Try reducing brightness or making the image cooler (more blue, there should be a mode for it) which reduce eye strain. Sitting further away from the monitor would also help. You can increase text size through windows settings.
If you are getting strained because you are playing video games and tired of choppy movement of 60hz. Then I would recommend a 120hz monitor.