Melanoma is a type of cancer that develops in the cells that produce melanin the pigment that gives your skin its color. Your eyes also have melanin-producing cells and can develop melanoma. Eye melanoma is also called ocular melanoma. Most eye melanomas form in the part of the eye you can't see when looking in a mirror. This makes eye melanoma difficult to detect.
Eye melanoma may not cause signs and symptoms. When they do occur, signs and symptoms of eye melanoma can include growing dark spot on the iris, sensation of flashing lights, change in the shape of the dark circle (pupil) at the center of your eye, poor or blurry vision in one eye etc.
To detect melanoma doctor does a n eye checkup or eye ultrasound which uses high-frequency sound waves from a hand-held, wand-like apparatus called a transducer to produce images of your eye or imaging of the blood vessels in and around the tumor (angiogram). A small eye melanoma may not require immediate treatment. Operations used to treat eye melanoma include procedures to remove part of the eye or a procedure to remove the entire eye(enucleation).