I had all the lower level negative side-effects that the FDA is really talking about now. And it's very likely because I was allowed to have it when I really shouldn't have passed the screening. I did have perfect vision for about 8 years, but all the other complaints made it so not worth it. Low vision when going from dark to light or light to dark, extreme discomfort in bright light (when someone takes a flash picture on something like POTC it would take minutes for my vision to come back, for example), dry eyes (I still have to buy the expensive Genteal eyedrops for that), halos at night sometimes. I also have a huge nasty "bloodshot" vein that comes out from where they did the cut (they cut a flap and then use the laser under that) on the eye that they did too quickly (the anesthetic drop hadn't quite "sunk in" yet on that eye).
I had worn glasses before (gave up on contacts after a nasty bout of conjunctivitis) for years, and was VERY swayed on the whole "no glasses" thing. What a CROCK. I had to wear sunglasses ALL the time! And i live in Western WA, there's not a HUGE amount of sunlight on most given days. But I would sometimes have to wear sunglasses INSIDE my apartment, depending on the light outside. Ridiculous.
If you are screened OUT, just go with it. If you're screened IN, get some more opinions.
My sis in law had a great experience with lasik (she's had two touch-ups as well), but I didn't, and it's hard to know what end you're going to wind up on.