Complications are possible, but exceptional.
The risk of going blind is virtually zero.
Minor complications are estimated at less than 0.8% according to the SNOF (Syndicat National des ophtalmologues de France).
Laser surgery is some thirty years old, and has been around since the 1990s. Lasers have improved considerably, with micron-level precision, since the 2000s.
It should also be noted that, thanks to major technological advances in corneal topography, we are able to carry out ultra-precise pre-operative examinations, enabling us to pre-select eligible patients and obtain results that are close to 100% satisfactory.