A pretty common misconception wrt PRK/LASIK is that you will not need glasses. NOT TRUE. As you age(i.e. get close the the 40ish region) your ability to read close up still goes by the wayside, hence the need for bifocals. That requirement doesn't change with the surgery. I had PRK done at 31, so the 9 years of not wearing glasses/contacts was well worth the risk, not to mention I see a heckuva lot better.

As for the post debating risk vs reward and PRK with the military career vs civilian, your assumptions are a bit off. Even if the procedure for PRK was only to allow you 20/25, you'd most likely still be able to get a class I with glasses correcting you to 20/20. Its definitely a personal decision, most noteably influenced by the fear of someone scraping or cutting your eye with either a blade or a laser. Could the computer screw up and zap your eyes the wrong way....sure, is it likely.....no, is there risk, yes, is there risk each time you fly.......most definitely. If you look at statistics for these procedures.....you're in good shape. Just my .02.