Mayo Clinic Health Manager
Get free personalized health guidance for you and your family.
Get StartedWhen to seek medical advice
By Mayo Clinic staffSome types of eye melanomas can be detected only by an eye doctor, so it's a good idea to have regular, routine eye examinations. Because this type of cancer is rare, there's no screening test other than an eye examination.
If you observe a dark spot on your iris that is enlarging, have a doctor examine it. Many doctors believe that skin and eye melanomas start from a mole (nevus). If you have a nevus or a freckle in your eye, have it checked regularly by an eye doctor.