Lasik deals with nearsightedness or farsightedness. Don't confuse that with presbyopia.I wore glasses since I was a kid and had Lasik when I was around 25. Been 16 years and I would do it a thousand times over. There are risks but being free from glasses has been amazing. Maybe one of the best things I have ever done for my own quality of life. Lasik isn't vanity surgery; it's personal freedom. I don't know how well it works for older folks, but if you're a candidate, the benefits are so much more than just being able to shoot iron sights. It will change the way you live your life.
The downsides for me? I have small starbursts at night around lights. If you're tired, your vision gets blurier (which seems to be a natural thing anyway). With glasses, my vision wasn't blurry even when super tired. I will, according the doctors, 100% need cheaters someday. I lost the ability to focus super close up when looking at something (sub 3" away). Also the tensile strength of the surface of your eye is reduced by something like 70% so not a great idea if you get poked in the eyes a lot or will be experiencing lots of pressure from things like diving. I'm also very slightly more light sensitive to bright lights.
That is every single minor thing I have noticed. I'd have a hard time making the list of positives as they start the second I wake up in the morning and last until I kiss my wife goodnight (no more smudged glasses!). I'm a Lasik fan for life, which is good, because there is no going back.
Good luck with your choice!
I assume the OP is talking about presbyopia. The only thing lasik can do to help with that is make one eye for far sighted seeing and the other eye for close seeing. This has complications for many people even when doing the same thing with just contacts (called monovision).
Also as we age the presbyopia changes, so if lasik sets the eyes at one level it may need to be set again fairly soon as the eyes ability to focus changes.