Sometimes looking at a screen for too long hurts. This happens to me when I use my computer or smartphone for too many hours, and my eyes become tired and weak.
Lately I noticed that if, instead of looking directly at my computer screen, I look at its reflection through the covering glass of my turned-off iphone screen, not only it feels easier, the image actually seem to be sharper. I can actually notice the pixels.
What could be the reason?
Something that might be related: I also noticed that when I use my iphone or home computer, it is easier for me to look at it from aside ( > 45 degrees) instead of front. The screen suddenly seem more like a normal object and less like a light source.