i use a matte screen protector on my iphone. without it, i can see pixels. with it, i cannot. no loupe, just my nearsighted eyes

You can see actual pixels on a retina iphone? That is remarkable eyesight. I could do it on old non retina iphones but not on retina models.

Kind of a cool thing about being nearsighted. Without glasses, I can get very close to things and still focus on them, i get to see very small details.