What causes ocular melanoma?
Unlike skin melanoma, there is no convincing evidence to show that sunlight causes choroidal melanomas. Like many other forms of cancer, the exact cause is unknown. Ocular melanoma is more common in people with lighter skin and in those over sixty years of age (although a significant number of patients are thirty or younger). Other predisposing factors that have been identified include exposure to ultraviolet radiation, genetics, or having a nevus (freckle). It occurs equally in men and women, and in left and right eyes. As far as we know, there is nothing you could have done to prevent ocular melanoma.
