Treatment. After an eye melanoma is diagnosed, treatment has to begin as soon as possible to ensure that the cancer doesn’t spread to other parts of the body. It is also important because a person can lose their vision because of this condition. Some of the most common treatment methods that are used for eye melanomas are cryotherapy, surgery, and radiation. In advanced cases of the condition, the entire eye may need to be removed. If this occurs, doctors can fit their patient with a prosthetic eye as soon as they recover from the surgery. That way, their quality of life will not be limited by their embarrassment of an exposed eye socket.