Emily Ying Chew, M.D., is an American ophthalmologist and an expert on the human retina with a strong clinical and research interest in diabetic eye disease and age-related eye diseases. She currently works for the National Eye Institute (NEI) at the National Institutes of Health (NIH) in Bethesda, Maryland, where she serves as deputy director of the Division of Epidemiology and Clinical Applications (DECA) and the Institute's deputy clinical director. She designs and implements Phase 1, 2 and 3 clinical trials at the NIH Clinical Center. Chew is board certified in ophthalmology.