Dr. Courtney Humphrey, 633rd Aerospace Medicine Squadron optometrist, holds a lens used to look into a patient’s eye at Joint Base Langley-Eustis, Virginia, Jan. 27, 2020. Humphrey is one of three doctors in the Langley AFB optometry clinic, treating active duty personnel from all branches. (U.S. Air Force photo by Airman 1st Class Sarah Dowe)