Checking a patient’s vision

U.S. Navy Hospital Corpsman 2nd Class Cahlil Weaver, assigned to the Military Sealift Command hospital ship USNS Mercy (T-AH 19), uses an auto refractor to check a patient’s vision during a Pacific Partnership 2010 medical civic action program at the Phuoc Hoa Secondary School in Vietnam June 5, 2010. Pacific Partnership is an annual U.S. Pacific Fleet-sponsored humanitarian civic assistance endeavor aimed at strengthening regional relationships with host and partner nations in Southeast Asia and Oceania. (DoD photo by Mass Communication Specialist 2nd Class Jon Husman, U.S. Navy/Released)