I did it in the US, where it's much more expensive. The two things to ask your surgeon is how many of these he/she has done because success is directly correlated with the number of procedures done and does he/she do "custom" lasik (better results of 20-20.). Mine had done 30,000, including Tiger Woods (I figured that was a good endorsement.) Probably one of the biggest risks is that you will not get a good result and have to have it re-done, or the risk that you will have "halos" at night and not be able to drive. Occasionally, of course, there's the risk of infection as in any surgery. But I've never met anyone who had an infection problem.
Mandi