i use redshift (and sometimes the gtk frontend for it). my prescription glasses have a coating over them that blocks a lot of blue light, blocks uv, and a couple of other things.
I use f.lux on my desktop. (I don't use my laptop late enough at night for it to be necessary.)
I don't have it set quite as aggressively as they recommend, but it definitely helps.
I use redshift aswell
Maybe I should start. I don't really think about how the blue light affects me but I do have issues falling asleep.>>527
Interesting, Ill look into it.
Redshift is just a free software alternative to f.lux: http://jonls.dk/redshift/