I know how you feel. I have horrible eyesight, although it's still correctable to 20/15, I can't see two feet in front of my face without glasses. I too found out this spring that I'm high risk for glaucoma (my Mom has been dealing with it for a couple of decades), and that I have cataracts forming in both eyes. Although the cataracts most likely won't affect my vision enough to be able to have them removed for 10 years or so. So, I have that going for me.
I've always had bad eyesight, but when I was in my early 40s (I'm mid 50s now) I started to need progressive lenses. That's when I started having problems with my vision - even though technically I was able to go from 20/400+ and 20/360+ to 20/15, I started having a horrible time focusing with the progressives.
Even though the new progressive lenses have a much wider field of vision, they're still difficult for me to read things like an item on the bottom shelf of a grocery store.
I guess the thing that really got to me was the news that glaucoma is a real likely possibility for me down the road.
I would offer a PSA to everyone who doesn't need glasses, and doesn't go to an eye dr. on a regular basis - go. Get an appointment even if you don't have vision problems now because there are eye diseases that can affect one with 20/20 vision, that if caught early can be managed a whole lot better.