[NathanKP]

- Get an external monitor if you can. Personally I can't use a laptop for an extended period of time because it really takes a toll on your body. I just use my laptop in clamshell mode with a large external monitor, and an external mechanical keyboard and mouse.

- Get up and walk around. I usually get up and stay up for 15-30 mins about once every two to three hours. Mid afternoon (the longest work stretch of my day) I get up, go down 12 flights of stairs and take a walk around a few blocks just to keep the blood moving.

- With regard to eyes use a dark background for everything. Bright light is what makes your eyes hurt. Alternatively make sure the difference between foreground and background isn't too great. A soft light behind your monitor can reduce the contrast between the blinding light coming out of it and the dark area behind. Also make sure to look away from the screen periodically. If there is a window nearby stand up every 15 mins or so, walk over to it, and look out at a distant object. This is good for both body and eyes.