I've had issues with my eyesight for years, I've worn glasses since middle school and in high school I begun having debilitating migraines with visual symptons. It was around that time that I realized I also have something called visual snow, and since then going blind is something I worry a lot. 

A few years ago I started to have more difficulty in reading things, specially if it was in a larger format like a movie title or a big text in a billboard, as if I could only see a few words at a time. If I look at myself in the mirror I can either properly see my eyes and nose or my mouth, not both. I saw a doctor, she did some quick tests in the room and check my eye pressure and assured me everything was fine, but the feeling remained. Now the fact that I have barely left the house in the last  4 years and havent changed my glasses' lenses probably doesn't help.

Lately I thought I was having blindspots, similar to the ones I have before my migraines, but lasting longer and more frequently. But I have realized through those online tests that they are likely just the kind of blindposts we all have in our vision. But now I can't unsee them, no pun intended. I notice them all the time and I keep worrying I'm going blind. Sometimes I swear I'm going cross eyed by looking at recent pictures. I don't know whats normal anymore, I don't know if I'm really having serious blindspots or if I'm just paranoid and going crazy.