PRK surgery does not stabilize changing vision, it simply corrects your current vision by reshaping the cornea to focus light differently. Any surgeon will tell you that your vision should be stable for about two years before the procedure. Otherwise, it could be corrected to 20/20 but continue changing and you will have gone through a risky and expensive procedure and still end up with crappy vision. I can tell you that you are not SOL...you can become an NFO (a naval aviator). Keep in mind that even if you get the surgery, that does not mean you will become a pilot. I had PRK in May, high ASTB scores, good GPA, etc. all in hopes of getting selected for pilot but was recently selected for flight officer. And you know what? I'm still going to pin on wings and go flying. Don't give up on naval aviation, there are plenty of jobs out there.