There are some citations on the f.lux website: http://stereopsis.com/flux/research.html http://stereopsis.com/flux/research.html Anecdotally, when I initially

There are some citations on the f.lux website: http://stereopsis.com/flux/research.html http://stereopsis.com/flux/research.html Anecdotally, when I initially switched to using f.lux on my desktop (reduces blue light levels at night) it's become a lot easier to drift off despite sitting in front of the screen until ~15 mins before bed.