Besides turning my screen more amber at night, the main feature I use f.lux for is matching my ambient office light. I downloaded an app that measures color temperature and took a picture of a white piece of paper with my phone. My particular ambient light temperature is 4200K because of the fluorescent lights they use in my office. I set my monitor to match that, and it has helped my eyestrain and headaches considerably. The other thing I did to eliminate eyestrain was to get a pair of +1.00 reading glasses, because my eyes are just starting to get a little blurry.
Thank you for mentioning this! I've been experiencing eyestrain and eye pain far more than usual lately and was wondering if there was anything out there I could use to help me figure out what was going on, or at least adapt, beyond glasses (which I now have). I didn't know flux could do this, so thank you!
