You would think my vision is amazing by the little crap I obsess about, but actually its poor. One way I deal with it, is I flood the area with lights. I forget the lumen output which is what really matters, but I have left over grow lights in my art room, as well as a 4 of the 12 inch curly fluorescents that are "the equivalent of 300 watts" over my table, which also lights from under. I remember from photography and my telescope that the more light you have the better you can see.
Plus I have dollar store reader glasses everywhere that are stronger than my regular glasses. Also when i am block sanding the final coat, I use a big magnifying glass to look for little micro gas holes.
It reminds me though, that you dont need microscopic vision to do good work. On the H.G. pf I just finished, I quickly noticed the hairline cracks around the inserts, but I missed a little blue stripe that CPR didnt screen correctly.(look below the 30 thousand insert) Every pf has inserts with key lines, (often with issues) so I automatically focus on that, but since every title is so different, it is often easy to miss little flaws in the print, until I have to focus on every sq inch of the surface for the final clear. Unfortunately that's when I find them, and it makes me so mad.