while looking over i saw that you must meet the standards for both Refractive Error x.xx and Visual Acuity 20/xx. My plan is to become an officer and a pilot in the Air Force, but for now I am enlisting because i need the direction and motivation. Right now my contact prescription says 3.5 which would put me within limits of the pre-prk refraction error of 5.5.My question is what is the difference between the two test, and why are both needed? Also, Since i will work Mx on the flightline does this give me a better chance at receiving the surgery?