I doubt the 1/3 number is correct; only 35% of each class can have (known)eye problems. I say known since 2 plebes in my company showed up and found out they were color blind with certain colors. I don't know how it took 17,18 years to figure that one out, but it did.
Anyway, yeah, alot of people get the surgery. Alot of people who get the surgery get to go pilot/nfo. Don't make PRK the reason you come to the Academy.