F.lux--Very useful software for night-time computer users
After reading a thread on the xkcd forums, I found a nice bit of software that significantly reduces my eyestrain while I'm working on a computer at night.
Here is the download link: http://www.stereopsis.com/flux/
It works not by reducing the brightness of your screen, but by reducing the color temperature at sunset in your region. Monitors are set to mimic daylight to reflect truer colors. This is fine if you work in the day, but staring at such a spectrum causes eyestrain at low light. By changing the spectrum of one's monitor to reflect ambient light, things no longer look so harsh and sterile.
I've only been using it for a few minutes, and I LOVE IT! :D
Although things look kind of funny with a sort of pink tinge to them for a few minutes, the strain on my eyes nearly vanished.
Note that if you have to do any color-sensitive work, you can disable the program for an hour to reset to the default spectrum.
The site has studies that have shown that reducing the color temperature positively affects sleep patterns. I briefly considered putting this into Sleep and Health, but I have yet to realize any such benefits. Plus, I figured that this would be seen by many more users in the Lounge. Mods, if this is in the wrong section, then please move it.