On the issue of glasses, I asked by doctor to give me a prescription for my regular bifocals, with a +1.0 in the top of the lens, just for shooting. This is where most folks look when shooting. He didn't think I would like it, so I bought a pair of the stick-on bifocals and cut them to fit where I wanted them on my sunglasses.
It worked fine for IDPA, but I wear contacts and use reading cheaters when I need them. The only way this would help me is if I used them on regular sunglasses, but I'm out of luck when sunglasses aren't needed.
So, I went back to shooting without any cheaters so I'm more prepared for a surprise. Yep, the front sight isn’t as clear as it was 20 years ago, but I think I’ve found which of the front sights to use.
BTW, surgical mono-vision wasn't an option for me. I'm a pilot (not for a living) and it's not FAA approved.
Regards,
Chas.