Dr. Rosberger completed an internship in Internal Medicine and residency in Ophthalmology at The New York Hospital-Cornell Medical Center, Memorial Sloan Kettering Cancer Center and Hospital for Special Surgery.

Dr. Rosberger completed advanced fellowship training in Medical Retina, Ocular Oncology, Ocular immunology, and state-of-the-art Vitreoretinal Surgery at Johns Hopkins University's Wilmer Ophthalmoiogical Institute.   While at Johns Hopkins, Dr. Rosberger received the highly prestigious Heed Foundation and Knapp Fellowships.  He is a member of the Vitreous Society.

Dr. Rosberger has received numerous additional honors, grants and fellowships over the years.  He has published over forty abstracts, articles and book chapters. He has lectured at Universities and Scientific Meetings across the country. He is currently a Clinical Assistant Professor of Ophthalmology at The New York Hospital-Cornell Medical Center and on staff at St. Vincent's Medical Center, North Shore University Hospital, and Winthrop University Hospital.