My gf got this done earlier in the year. Without glasses/contacts she was considered legally blind. Came out with close to 20/20 vision.
In a bit of a horror story, one of my friends got it done 3-4 years ago. He claims the surgeon somehow fucked up his tear ducts so his eyes were super dry. He's since had that fixed, but it lead to him accidentally confusing flea medication(for his cat) for eye drops. Suffice it to say, he's wearing glasses again. So long money.
I got it done at the beginning of 2014 (prk) and it was amazing. Occasional dryness, but thats it. My vision is somewhere between 20/20 and 20/15 now.