I have noticed a funny thing yesterday regarding my eyestrain (macbook pro retina 15in).
I have noticed that when drunk, the display does not bother me as much. My friend who is a doctor said it might be that the muscles in my eyes are more relaxed and do not try to focus on the flicker.
Another option is that when there is dust on my monitor, it seems i refocus quite often on the dust and not on the (possibly) flickering display, which is impossible to find a fixed spot to focus on. The dust seems to serve as a screen protector and a thing for my eyes to fix upon.
I know we cant all be drunk all the time to work on modern displays, but maybe its a thing worth testing🙂
Good luck with your eyestrain