Maj. Bryan Kemper, 28th Medical Operations Squadron optometrist, performs a slit lamp test under magnification on U.S Army Staff Sgt. David Neugebauer, 235th Military Police Company training NCO, during a routine eye exam in the optometry clinic at Ellsworth Air Force Base, S.D., April 12, 2012. By using magnification, Kemper was able to evaluate the retna and back of the eye to ensure the entire eye was healthy. (U.S. Air Force photo by Airman 1st Class Kate Thornton/Released)