Had mine done 18mths ago... both eyes,( was -3.00 and -2.75) bit uncomfortable first evening, felt like having hay fever!
Improvement in sight was immediate, didn't run for two weeks after, for my own peace of mind! (Didn't want to get sweat in eyes or inadvertantly rub them)
My first run in the rain was pure bliss.... LOL
I think it took me about a year to get used to not wearing glasses (ie, pushing them up my nose, reaching for them in the morning etc etc!)
HG Yes they will, apparently lens change the shape of your eye, so presumably that would mean that the careful calculations that are done with regard to how much cornea is lasered would then be wrong. Personally i wouldn't of thought it was worth the risk.