• Dr. Marr is a board-certified ophthalmologist at Memorial Sloan Kettering Cancer Center since 2008. As one of the very few ocular oncologists trained in all aspects of eye cancer, he lectures and consults internationally and is an author of almost 50 research articles in the field of ocular oncology.

    He received his medical degree from Temple University School of Medicine in Philadelphia. He completed his medical training at the New York Eye and Ear Infirmary in New York City and a fellowship in ocular oncology at Wills Eye Hospital in Philadelphia, where he gained extensive experience treating intraocular tumors in children and adults.