Agreed regarding optics. CMP changed the rule to allow optics for Modern Military class, which pretty much required an optic if you wanted to remain competitive. The weight limit made it very difficult, but it could be done. That leveled the field for older shooters. After a year or two, CMP rules banned optics- which was a head-scratcher.Same here at the end of October. Unfortunately for me my extreme myopia means I’m not a candidate for the new Extended focus IOLs and the Multifocal IOLs that are available to me all have a history of halo effects. The halo effect is one of my biggest issues with my cataracts, so I really don’t want them after I get the surgery. Since I’ve had to wear glasses since I was 5 years old, having to wear glasses with a standard Monofocal IOL is no biggie for me. My distance vision will be fine but I’ll need reading glasses for close up work and probable a shooting correction. Again, that’s because the Monofocals have a depth of field (range of focus) from about 1 meter to infinity and 1 meter is just a bit too far for the front iron sight of a handgun or rifle. So for anything closer than 1 meter you need corrective glasses. The Extended focus and Multifocal IOLs can get you clear vision from near (around 35 cm, a bit over 1 foot) to far, so if your only worrying about your front sight when shooting irons, you’re good to go.
I don’t think I'm "quite a bit younger” (actually I’m probably quite a bit older) than most folks on the forum, but I was kind of addressing the under 60’s crowd. I will agree that your overall vision acuity does degrade over time. Especial, as is my case, you have cataracts. But the whole depth of field discussion is true for any optical system.
I will say that modern optics will let you shoot way past your prime vision days. The ability to mount red dots on my handguns (even some of my revolvers) has been a real God send.