Seeing is believing
U.S. Air Force Tech. Sgt. Joel Ives performs a topographer test on U.S. Air Force Lt. Col. Holly Ellenberger during a refractive eye surgery prescreening at the 4th Aerospace Medicine Squadron optometry clinic on Seymour Johnson Air Force Base, N.C., Feb. 7, 2012. The test determines elevation of the corneas which gives the doctor performing the corrective surgery a layout of the patient’s eye. Ives, 4th AMDS ophthalmic technician, hails from Argyle, N.Y. Ellenberger, 4th AMDS dental flight commander, hails from Bexley, Ohio. (U.S. Air Force photo/Senior Airman Gino Reyes/Released)