I know it's late to the conversation, but my experience with PRK was good, judging from a cost/benefit analysis.
My command allowed anyone who wanted to and was eligible for surgery to go through it, because I guess Trippler Army Medical Center had spare time on their hands or something. My vision was around 20/60 in each eye, so I signed up.
Process was smooth; the worst part was the sand-in-the-eyes feeling on days 3 through 6, and as long as you keep up on the drops they give you, you will heal in the prescribed time. I had missed a few drops every day for a week, and the doctor noticed it in how my eye was healing; she then upped the dosage and I healed fully by a couple of months post-surgery.
I haven't had any irregular eye problems since then, though I have noticed an ever so slight increase in glare. Good trade off for 20/15 vision.