> It's the worst when I'm working on my computer, due to the blue light (I've started wearing yellow sunglasses to minimize the effect)
If you are on Linux you should have a look at Redshift[0]. It allows you to adjust color temperature and brightness via command line. During daytime I put more blue and brightness into the screen, depending on the weather outside (5000K-6500K, 70%-100% brightness). I do this once when I start working. When it gets dark outside I turn the values down to something like 3000K-4000K and 50%-70% brightness, depending on the amount of light inside the room. This relaxes your eyes and puts you in a better (less tensive) mood, especially at night. Redshift really became essential to me.