I had it done and dont regret it
I had corrective surgery about 12 years ago. The first company told me they couldn't do the surgery I required (so some do have your interests at heart).
the second company used the new (at the time!) waveform technique and it has, touch wood, been fine over the last 12 years.
The missus who was watching said the worst part was the smell of them burning my eyeball with the laser.
Afterwards I started hearing horror stories of others - would I have it done again. NO
am i glad I had it done and it worked out great. YES