After preforming it on myself-( foreign body in the eye that formed scar tissue and changed my optical prescription.) I had an eye surgeon do the real procedure.
Quick, non painful, no issues.
Well one. If you know what the optical aberration called "flare" is, I have that to a degree. That is, I have difficulty seeing highly back-lighted subjects. Like the numbers on a train locomotive at night when the headlight is in my eyes. My friend can easily see the numbers in that situation, but I cannot. Or like a deer in the road when back lite by oncoming traffic.
Other than that--no problems.