I'm with Katti. I had LASIK 6 years ago from one of the top surgeons in the US and was initially very happy with the results. However, within a year, I had to start wearing reading glasses (one of the side effects of LASIK is that it speeds up the need to use reading glasses). So now I can't go anywhere without glasses, and often find myself wondering why I did it.
Having said that, if you're still determined to get it done, Dr. Zaldivar (
http://www.institutozaldivar.com/) has a very good reputation. He's based in Mendoza, but also has a clinic in BA. Patients come from all over South America for his LASIK (and other) procedures.