I just want to confirm that what is written here is true. I tested 20/40 while in ROTC putting in my pilot package. I was picked up for SNA, but spent the next year and a half after my physical worrying about my right eye falling below 20/40. I was convinced that I would get to P'cola and get switched over to NFO because my right eye would be in the 20/50 range. I did everything humanly possible in the week leading up to the physical...hydrated like crazy, stayed outdoors all day focusing on things far away, sleeping 12 hours each night, vitamins, etc. Even worked up a scheme to send my roommates into the doc before me to try and get a few of the letters memorized on the eye chart for me (this is impossible and not even worth it..you'll realize why when you get there). Anyways, I ended up passing 20/40 again. But while getting my prescription for the glasses I asked the doc what would of happened had I been 20/50. He told me that because I was already designated as SNA, my eye sight could deteriorate to as much as 20/100 while in flight school with no risk of losing my designation.
So, long story short...if you pass 20/40 while applying and get selected for SNA, then you're good. Don't stress...you will have to wear glasses when you fly, but you'll be eligible for PRK and now even Lasik once you wing.
