Other feedback I got on the post was that in some countries you don't need several days of checks before getting the surgery. In some places they do it on the same day.
I live in the U.S. and had my surgery done in Vancouver, B.C., Canada. I didn't have to go through several days of preliminaries -- just an eye exam from a local optometrist in advance of the surgery.
That's the case in Mexico. I was lucky because 10 years ago when I was about to have LASIK (in Cancun), the company that was going to do it had their laboratories completely destroyed due to a hurricane (in Cancun). For this reason they asked some private eye clinic to lend their equipment (for LASIK surgery). BUT this clinic examined throughly all the patients that went for surgery. At the end, I was not a candidate fro LASIK because my cornea is very thin.
So I would definitely suggest people not to scrimp on tests before the operation.