I've been using F.lux, justgetflux.com, to filter out the blue light from my screen in the evenings so the screen light isn't as harsh as I code later in the day. You can customize the amount of filtering you want throughout the day and have the filter get stronger as the sun sets. There even is a feature that super filters your screen at 8 hours before your set "waking time" that serves as a reminder that I should probably get off my computer and go to sleep!
I've been using F.lux, justgetflux.com, to filter out the blue light from my screen in the evenings so the screen light isn't as harsh as I code later in the day. You can customize the amount of filtering you want throughout the day and have the filter get stronger as the sun sets. There even is a feature that super filters your screen at 8 hours before your set "waking time" that serves as a reminder that I should probably get off my computer and go to sleep!
Cannot say enough good things about f.lux! It's a great program and every dev should be using it or something like it!