Personally no experience, but a member of the family has recently had it done.
I'd suggest googling as much information on it as possible to make you comfy with the choices and options available.
There are, from brief conversations so I'm far from an authority on the matter, two (if not more?) different types available. One where a cut is made pulling back a section of the cover of the eye, the laser work done and then the flap replaced over the eye where it then "heals" and another where the covering of the eye is basically scraped away, the work done and the covering allowed to then grow back (the second means that eyes must be covered for a period and need frequent drops to avoid infection and keep the eyes lubricated following the operation - drops for a number of months following the operation).
The second is commonly used by athletes etc because risks of the skin flap not postioning correctly and other potential problems is reduced I believe. The family member chose the second option and is extremely delighted with the results.
Three months after the operation eyesight is now better than 20/20 (was 20/30 after a month from what I recall) and puts the eyesight of most friends without glasses to shame. His worked out extremely well but as with any medical procedure things can (and have) gone wrong.
Its also worth noting that not everyone has the option of laser surgery available. Depending on the correction needed and the size of the .... (not sure if its cornea/iris/which specific element) some people are outside of what the doctors will consider suitable. I know there are a number of places in Dublin who will do the checks as some friends have had it done (none took the step of going ahead with the surgery and not all were deemed suitable).