I've been nearsighted since 10ish and it hasn't gotten better over time, now right at the door of 70. I gave up shooting indoors 20 yrs ago because I could not see the front sights any longer. Presbyopia. For pistol work I resigned my self to red dots, lasers, etc. I even found a friendly optometrist in my late 40s who let me bring an airsoft Glock in so we could make a special pair of glasses but even those didn't work well.
Then a few weeks ago I got an AV 46M and got a whole lot of lights for my 9.3M basement range. But the front sights were still too blurry. I read that if the target is blurry and your front sights crisp that is OK. So I would try to achieve that.
I did a lot of reading on shooting 10M with prescription glasses. What I read was that +.75 fixes most issues and can be ordered as a one eye clip on. However, some shooters use +.25, +.50 and some +1.0 or higher, but most use +.75. There is some math involved but +.75 is right for most and is directly associated with distance from the eyeball to the front sight. And I had no idea if I needed +.25, +.50, +.75, +1.0, +1.25 and so on.
I looked at all the online companies that sell those one eyed clip ons for 10m pistol shooters and looked at the prices and said, I'll experiment first. Flip up readers. I figured I could take off the left eye lens of a flip up reader if I had to. So I ordered +1.00 flip up readers from Amazon. I didn't see any +.75 readers. Got the +1.00 pair, went to the basement with my regular bifocals, clipped them over my bifocals, turned on all the lights and sighted down the 46M. Holy cannoli! Not only could I see the front sights as crisp as I have ever seen a handgun front sight but I could see the target well enough to not have to do anything else. It was a $12.95 solution that has plagued me for years.
https://www.amazon.com/dp/B09STZDML4?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1