Ignoring the aspects of finding the right model that your eyes like, possibly tangential to your question. All other things being equal (including resolution)

Ignoring the aspects of finding the right model that your eyes like, possibly tangential to your question. All other things being equal (including resolution) - bigger displays (same resolution in the study - just bigger) - increased productivity. Something like 15" -vs- 40". That was for joe average office worker - but the point was that simply having a larger screen at a reasonable distance made it easier for the brain to process stuff (not so much see better as process better) If you are having negative effects on your eyes see an opthamologist, get your eyes and prescription checked, etc. Ignore comments about perfect colour calibration - that matters if you are doing design or print, but if it's just code, I can't see how that matters. Sharpness, the rest, matter.