Choroidal melanoma is a common intraocular malignancy, most often seen between the ages of 40 and 60 years, independent of gender or eye disease, and can occur anywhere in the choroid, but is commonly found in the posterior pole of the eye. Its appearance can seriously affect the health of patients. Choroidal malignant melanoma symptoms 1, confined: confined growth between the sclera and the vitreous membrane of the choroid, flat and oval. If it penetrates the vitreous membrane, it will expand rapidly in the subretinal cavity and form a mushroom-like tumor with a large base and a thin neck and head. 2.Diffuse: Characterized by extensive diffuse infiltration, tumor cells infiltrate through blood vessels and lymphatic sheaths and expand along the choroidal plane, so the course of the disease is longer and slower than the limited ones. There is no significant elevation of the fundus except for irregular pigmentation. If the choroidal melanoma is located in the peripheral part of the fundus, there are often no conscious symptoms in the early stage. If it is located in the posterior pole, patients often complain of visual acuity loss, visual field defects, visual distortion, black shadows in front of the eyes, color vision changes, and persistent hyperopic refraction increase. Severe vision loss may occur when the tumor enlarges and retinal detachment occurs. Funduscopic examination shows solid choroidal elevation with brownish color and hemorrhage on the surface, and exudative detachment may occur in the retina around the tumor. In case of tumor necrosis, it may be combined with iridocyclitis, anterior chamber pseudo-pus accumulation, anterior chamber pigmentation, and anterior chamber blood accumulation. Macrophages phagocytosis of tumor cells, pigment particles or necrotic residues, etc., free to the anterior chamber can lead to IOP elevation, and also to IOP elevation due to iris neovascularization, causing neovascular glaucoma.