Do you mean laser surgery? Lens replacement won't necessarily free you from glasses...fixed distance focus means you'll need specs for close up stuff like reading, checking instruments etc., and you may still need glasses to sharpen up your distance vision anyway. That's how my lens replacement worked out! (For cataract...when I was 26!)
I was driving again inside a few weeks once my new specs had been sorted, but don't know about grounding period for flying I'm afraid.