Choroidal hemangioma causing retinal detachment can also cause blindness if not treated in time. Choroidal hemangioma is usually caused by developmental abnormality, if the hemangioma forms leakage or hemorrhage, it may cause retinal detachment, timely treatment, reset the retina can protect the function of the retina to avoid blindness, but if the disease is allowed to develop, it may eventually lead to blindness. For choroidal hemangioma, the diagnosis can be confirmed through fundus fluorescence angiography, OCTA examination, etc. The treatment can be done through laser treatment, surgery, etc. to eliminate the hemangioma and reset the retina. Patients need to go to the ophthalmology department of the hospital as soon as possible for a clear diagnosis, after which targeted treatment can be taken to eliminate the symptoms.