There are many precautions to be taken before the treatment of choroidal neovascularization, mainly including reasonable diet, proper rest, attention to hygiene and so on. 1. Reasonable diet: Before the treatment of choroidal neovascularization, the diet should be light and nutritious, and it is forbidden to eat spicy and stimulating foods, such as peppers, peppercorns, chili peppers and so on, which may stimulate the blood vessels and affect the therapeutic effect. 2. Appropriate rest: before the treatment of choroidal neovascularization need to rest more, less late at night, the night sleep should be sufficient, try to ensure that 8 ~ 10 hours, otherwise it will affect the body’s immunity, delay the treatment of the disease. 3. Pay attention to hygiene: choroidal neovascularization patients need to pay attention to eye hygiene before treatment, not often touch with your hands, so as not to infect the bacteria aggravate the inflammatory reaction, affecting the therapeutic effect. Choroidal neovascularization treatment before the need to consult a doctor, and under the guidance of the doctor to adhere to the use of medication, mainly the use of levofloxacin eye drops as prescribed by the doctor, can effectively prevent inflammation and infection.