Dr. Robin Collard, McDonald Army Health Center Eye Clinic optometrist, looks through a slit lamp during an eye exam at Fort Eustis, Va. Aug. 21, 2015. The lamp allowed her to view the eye structures of U.S. Army Col. Glenn Hodges’, U.S. Army Training and Doctrine Command Army Capabilities Integration Center human performance and learning analyst. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)