U.S. Army Staff Sgt. David Neugebauer, 235th Military Police Company training NCO, receives a corneal topography during a routine eye exam in the 28th Medical Operations Squadron Optometry Clinic at Ellsworth Air Force Base, S.D., April 12, 2012. The optometry clinic is responsible for administering eye exams, issuing corrective lenses, acting as a liaison for optical surgeries, and similar optical services to servicemembers assigned to Ellsworth and their families. (U.S. Air Force photo by Airman 1st Class Kate Thornton/Released)