From the Oncology Service, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pennsylvania.
Reprint requests: Carol L. Shields, MD, Oncology Service, Wills Eye Hospital, 900 Walnut Street, Philadelphia, PA 19107.
Supported in part by the Paul Kayser International Award of Merit in Retina Research, Houston, TX (J.A.S.), Macula Foundation, New York, NY (C.A.S.), Orbis International, New York, NY (S.G.H.), Hyderabad Eye Research Foundation, Hyderabad, India (S.G.H.), and the Eye Tumor Research Foundation, Philadelphia, PA (C.A.S.).