Cornea issues (for me) aside, this is the main reason I don't want Lasik. I've heard of the "touch ups" as well, seeing halos, shit like that. With PRK, you're down for a week due to the fact that they literally burn the cornea from the outside in, and it will take a few days for the cells to regenerate. No flap, no bullshits. If it's good enough for aviators under high-G conditions, it's good enough for me.