Buck: I had corrective eye surgery done in the summer of 1984, at a time when Lasik did not exist and Radial Keratotomy was the procedure that was used. The cornea is pretty much dome shaped when a person's vision is good, and becomes a bit more peak shaped as a person becomes myopic. Shallow incisions in a radial pattern (i.e., circle) around the cornea flatten out the peak (i.e., returning it to the optimal dome shape), and improve vision. My RK was performed by my opthamologist using a diamond stylus (essentially a knife). I had both eyes done, and had 20/20 vision for roughly 25 years. Then, about ten years ago, as I began to suffer from Presbyopia (a gradual, and slight hardening of the cornea that affects most people starting in their 50's), my vision began to get worse. I needed contact lenses again.
What I did NOT know, because it was not known back in 1984, was that RK surgery makes the surface of the cornea more unstable. This instability increases with the depth of the cuts made in the original RK. The RK cuts on my right eye must have been deeper than on my left eye, as they have resulted in some slight scarring on the surface of my right cornea, which regular contact lenses irritate. I now use "Scleral Lenses" on both eyes. A bit of a hassle, but doable. My (corrected) vision in my right eye is nowhere near the 20/20 it is in my left eye.
I tell you all this because you should definitely ask your son's opthamologist if the Lasik procedure is known to have any negative side effects, either currently or down the road. I don't believe it does, because they pull back a flap of cornea in order to do the procedure, rather than making cuts on the surface of the cornea. But you should definitely ask about this. Lasik has been around long enough for doctors to know whether it presents any risks of corneal instability or scarring.