Uveal melanoma is a very rare cancer that forms on the eye’s skin tissue, usually in the back part of the eye under the retina (choroid). Sapna Patel, M.D., Assistant Professor in the Department of Melanoma Medical Oncology at The University of Texas MD Anderson Cancer Center, discusses the causes, symptoms and treatment of uveal melanoma. Patel also explains why it is important for everyone to have their eyes examined, even if your vision is 20/20.