I solved my eye strain by dimming my screen, putting a screen protector and using sun glasses. The sun glasses part sounds a bit silly and I probably should use real "hacker" glasses but they seem to work fine. I'm not sure exactly is there UV light that the glasses are blocking or is just the regular light that causes my eyes, after a long session of programming, to get blurry.

But anyway this setup has really reduced my eye strain and I also fall asleep easier.

EDIT: And to be exact, I had all of the sudden serious eye strain at the time when I started using these. Somehow it had gotten to a point where I couldn't even look at the screen anymore without my head hurting. And I'm still relatively young with normally a good eye sight so do not take these things for granted!