I too intentionally got monovision -- 20/20 in the one eye, and 20/40 in the leading eye, to avoid reading glasses. I was 20/2200 before surgery. I had PRK (photorefractive keratectomy), which came before Lasik and after RK (radial keratotomy). It's been seven years, and I am beginning to get a little myopic again, which would have been happening right now anyway. The doc says I can do a touch-up PRK if I want, plenty of corneal cells left for laser shaping.
PRK is like Lasik without the flap. It's done on the outer surface just below the top layer of cells, which are wiped away just before surgery. It takes a few days for them to grow back, "sealing" the eye. You wear a contact lens bandage while it does that. All laser, no blades, no flap. People prefer Lasik because it lets you skip the bandage afterward. Although it really still has to heal, the healing is all under the surface so you don't feel like you're going through a recovery at all. It seems instant. I opted for PRK because it was less invasive, even though the healing process was more of an ordeal.
I don't think anybody does RK anymore, and they never recommend touch-up surgeries with it. It leaves the corneal surface irregular.
PRK is like Lasik without the flap. It's done on the outer surface just below the top layer of cells, which are wiped away just before surgery. It takes a few days for them to grow back, "sealing" the eye. You wear a contact lens bandage while it does that. All laser, no blades, no flap. People prefer Lasik because it lets you skip the bandage afterward. Although it really still has to heal, the healing is all under the surface so you don't feel like you're going through a recovery at all. It seems instant. I opted for PRK because it was less invasive, even though the healing process was more of an ordeal.
I don't think anybody does RK anymore, and they never recommend touch-up surgeries with it. It leaves the corneal surface irregular.