I had LASIK surgery a few years ago in San Jose, CA. My only regret is that I wish I had it done earlier. I have friends who had horrible outcomes (one needs corneal transplant because he cannot see at night). I got referrals from three friends and then I researched all three MDs. I went with the one that answered my questions multiple times, and rescheduled my surgery twice because I had not left my contacts out for the entire 14 days as he had instructed. (One doctor, who has performed surgery on many pro athletes, seemed insulted when I asked him about his rate of complications. The other surgeon ... I never met. An associate of his performed my tests.) My friend who needs the corneal transplant had corneas that were too thin and should have never had the operation to begin with. Whomever you decide to go with, check them out completely. I do not care who they have already operated on, your eyes are precious and the only two that you have, don't trust your eye sight to just anyone and money should not be an object ... within reason of course.

I quickly searched on PubMed for LASIK Eye Surgery and there are 151 articles. I didn't look through many, but the longest study that I could find so far was 7 years post-op. "Confocal microscopy changes in epithelial and stromal thickness up to 7 years after LASIK and photorefractive keratectomy for myopia."
http://www.ncbi.nlm.nih.gov/pubmed/17455834?ordinalpos=...anel.Pubmed_RVDocSum
You might be able to find the answers that you seek if you search here long enough.

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