Dr. Orth is Professor of Ophthalmology at Rush-Presbyterian-St. Luke's Medical Center and Medical Director of the Irwin Retina Center at Ingalls Memorial Hospital. He is Principal Investigator for a number of NIH and NEI research projects and clinical studies including the AREDS, Complication of Age Related Macular Degeneration Prevention Trial (C.A.P.T.) and the Miravant sponsored PhotoDynamic Therapy Trial. He serves as team ophthalmologist for the Chicago Bulls and Chicago White Sox organizations.