Richard D. Semba is an American ophthalmologist. He grew up in Minneapolis, Minnesota and received his education at Yale University (B.S., Biology, 1978), Stanford University (M.A., M.D., 1983), and Johns Hopkins University (M.P.H., 1991). He did his residency training in ophthalmology at the Wilmer Eye Institute (1984–1987) and joined the faculty following his residency. Semba is currently the W. Richard Green Professor of Ophthalmology at the Johns Hopkins University School of Medicine. He is Affiliated Faculty with the Center for a Livable Future at Johns Hopkins University. Semba has done field research in Indonesia, Malaysia, Liberia, Malawi, Uganda, Peru, Venezuela, and Mexico. His research interests include nutrition and aging, sustainable diets and food systems, and the history of