My wife did.
She had it done in San Luis Obispo. There was no knife, so you don't have to worry about that
Basically, the procedure is for the doctor to medicate you up until you're calm. I think she was given 2 valium. The doctor seats you in the chair, and props your eyes open with clamps that look like they come out of a Tool video (or Rammstein' Sehnsucht album cover). They look creepy, but I don't think they bothered her.
They then put some drops into your eye to numb/anesthetize them. From what I remember seeing in a video they showes us the day before surgery, one laser is used to cut a flap on your cornea and the doctor lifts that away. Then, the laser used for the procedure is used to ablate some of your corneal tissue. She had the custom lasik done, which locks the laser onto your pupil so if your eye moves, the laser moves with it. The doctor then puts the flap back down with some drops and then repeats on the other eye (if you get both done).
The procedure itself takes about 24 to 30 seconds (per eye), but she was in the prep for one to two hours (since there were a number of people ahead of her).
After it's all said and done, they give you goggles to sleep with for a week, and you go home and keep your eyes shut for about 8 hours. Fortunately, you're so medicated with valium, this isn't a problem.
From what she told me, it was a snap, and I believe the procedure itself feels like you have something in your eye, but there is no pain whatsoever.
The next morning, she woke up and tried to take her contacts out, her eyes were so clear
You'll have a couple of checkups, and the only problem she had was one eye dried out a bit so it was blurry. Her vision went for 20/300 (before surgery) to 20/25 in about a week, and the doctor thought it would continue to improve.
Don't worry about it, it seems to be a great procedure, and the eye surgeons have developed excellent protocols.
If you have any more questions/concerns, PM me with an e-mail you can be contacted at, and I'll put her in touch with you.
Good luck, and let us know how it goes.