Uveal melanoma is a type of cancerous growth that occurs in the uveal tract, which is the layer of the eye that contains blood vessels and melanin-producing cells. Synonyms for uveal melanoma include ocular melanoma, intraocular melanoma and choroidal melanoma. These terms are used interchangeably to describe cancer that develops in the eye, particularly in the choroid layer, which is the main blood supply of the retina. The symptoms of uveal melanoma include blurry vision, dark spots on the iris and pain in the eye. Early detection and treatment are important to prevent complications and preserve vision.