Melanoma, scientifically known as cutaneous malignant melanoma, is a common skin tumor caused by excessive proliferation of abnormal melanocytes, which is extremely malignant and accounts for a large proportion of skin tumor deaths. In reality, many people do not know about this disease, or the onset of the disease is hidden (for example, the soles of the feet), and the early symptoms of this disease are not obvious, so it often does not attract people’s attention, and once diagnosed, most of them are already at an advanced stage, missing the best time for treatment. Although melanoma mostly occurs in the skin, it can be produced by malignant transformation of skin nevi and can appear in any part of the body that can produce tumors, including the eyes, nose and throat. In the eye, these include eyelid melanoma and intraocular melanoma. Intraocular melanoma refers primarily to uveal melanoma, which in turn includes the iris, choroid, and ciliary body, three areas where melanoma can also occur. The early symptoms of melanoma are not obvious and many of them come from having malignant nevi, which are often overlooked in their early benign state. Two common types of ocular malignant melanoma 1, uveal malignant melanoma Uveal malignant melanoma is the most common type of malignant intraocular tumor in adults, and its incidence accounts for the first place of intraocular tumors in foreign countries, and ranks second in intraocular tumors after retinoblastoma in China. This tumor is highly malignant, easily metastasized through blood stream, and is more common in adults, which is easily confused with many fundus diseases in clinical work. 2.Choroidal melanoma Choroidal melanoma (choroidal melanoma), like iris and ciliary body melanoma, is a tumor composed of malignant melanoma cells whose tissue occurs in melanocytes within the choroidal stroma. The choroid is the most frequent site of uveal melanoma and is the most common intraocular malignancy in adults. It is most commonly seen between the ages of 40 and 60 years, independent of gender or right or left eye, and can occur anywhere in the choroid, but is commonly found in the posterior pole of the eye.