This doesn't answer the OP's question, but might be useful for other people that are interested.
I had PRK done about three years ago. I'm very glad I did.
I was nearsided and wore glassed from age 13 to 16 and contacts from 17 to 35. Vision was about the same for the last 20 years. I think it was -1.50 in both eyes, super basic near sidedness. Not wearing glasses/contacts is amazing.
PRK is what they did before Lasik was available. Basically the results from PRK are the same as Lasik, but the recovery takes longer. I wasn't a candidate for Lasik because I had some scar tissue on my eye that they were concerned might mess with the lasers. I don't remember ever having any eye injuries, but I spent enough time in the shop and in the outdoors that I'm not surprised.
It was way more uncomfortable than I expected, but most of that went away in a couple hours. After that my eyes just felt sensitive to light and dry for a few days, lots of eye drops, keeping the eye drops in the fridge helped. Now, a few years later, my eyes are still a little dry when I wake up in the morning. I keep eye drops next to my bed, but if I forget them, I can just blink a few times and it's just uncomfortable for the first minute or so.
My friends that had Lasik instead of PRK say they went to work the next day and recovery was basically a non-issue.
I feel like my night vision is better, but it was never that good, and I don't have any scientific way to measure that.
I paid $5,800 for the procedure and all pre/post op care. I paid for it from my HSA, so I didn't pay taxes on that money. If you have an HSA, but don't have enough in it to pay for the surgery, you can pay cash for the surgery, then years later pay yourself back with pre-tax money, as long as you have a HSA the whole time. That's what I did and as far as I know it's completely legal.
If you're in the Silicon Valley area, I would recomend furlongvision.com