Make sure you get several opinions before you get this done. My uncle had this done a bit over a year ago, and is in pretty bad shape now. 3 proceedures later, he now has his tear ducts plugged, constantly needs eyedrops, always has the "corona" effect, constant pain for about 4-5 months (now just a few hours a day during the light changes) and depth perception is very bad. Turns out he was a poor candidate in the first place, and never should have gotten it, but the doctor that was supposedly the best in the area never mentioned this to him, and forgot to do the proper tests before the surgery. Don't believe the success rate they tell you - the doctor who did my uncle's proceedure considered him a "success". He ignored him when he complain of problems a few weeks after the test, forged his medical records after the fact, my uncle purposely failed the eye chart, doc said he got it perfect, etc. You only have two eyes, and if they mess it up, there is not much you can do to fix it. Check out http://www.surgicaleyes.com before you elect to go ahead with the proceedure.
Rocko