I think lasers are more usable at this point, and I have gone through the unfortunate transition, from great eyes to very sorry eyes, I still feel confident with irons to 15 yrd making head shots, but cannot hit 10 rings or x's at 25 on purpose. Optics when they are usable, like the rifle, I do use, sometimes I don't like it, but it works when I can't. It sucks to loose your eyesight, but today we have a lot more options. It is better to hit with a crutch than miss with a boulder.
God bless you young sons who can still see.
I hated unlimited, until I could not see the front sight and the target at the same time. I hope not, but probably, your time will come.