Choroidal neovascularization refers to the appearance of new proliferating blood vessels in the choroid, which is mostly pathologic because of the incomplete walls of the vessels and their tendency to bleed. Choroidal neovascularization, also known as subretinal neovascularization, is more common in the macular region, which can impair the patient’s central vision and is one of the causes of blindness. Choroidal neovascularization is most common in middle-aged and elderly people, and may be associated with macular degeneration and high myopic fundus disorders. Early symptoms of choroidal neovascularization are not obvious, but with the progress of the disease, leakage and rupture and bleeding may occur, which may cause patients to suffer from symptoms such as vision loss, distortion of vision, or the appearance of central or paracentral dark spots, and patients with recurrent symptoms may suffer from permanent visual impairment. It is recommended that patients with choroidal neovascularization consult a regular hospital in time to evaluate their condition and follow the doctor’s instructions for treatment.