As a kid, I had no idea that I couldn't see well. How did I know what vision was like? In retrospect, I was sitting closer and closer to the TV from about 3rd grade on. A coach in 7th grade basketball noticed that I squinted really hard when I was shooting a basket. He talked to my parents. Glasses followed soon after. My grades and basketball both improved (not that great, I was still clumsy having grown a foot in a year...)
My ophthalmologist and I became good friends, having seen each other for over 20 years. We retired the same year too. After awhile, I told him, "I think I'm having trouble with my yellows when playing with post-processing for my photos." (He's a Nikon guy, but still a decent person).
He said, "You've always known when something wasn't right. You might be too perceptive for your own good. Be sure to bother your new ophthalmologist about yellowing lenses and cataracts as time goes on."
So, yeah. With contacts, I usually need sunglasses. With vari-focal lens in my glasses, photography is a chore. Glasses make using the viewfinder complicated in either case. And either way, focus is an endeavor. I'm not sure I have a point or an answer, other than, "You're not the only one."
I'm always impressed by those who get super sharp focus and love seeing those photos. One of these days, I'd like a couple days instruction from someone who can do that, so that I know what I'm not doing right. But I do try.
I used to do pretty well with an Olympus or Yashica rangefinder on film. Rangefinder focusing has always been easier for me -- lining up the bright double images -- even though I've had a Pentax SLR of one sort or another for over 40 years. I tried a Katzeye split image screen on my K200D, but there was still the glasses thing with the viewfinder.