Dry eye cannot be completely cured due to its complex causes, but there are many preventive methods. If you pay attention to the following aspects in your usual work, study and life, you can greatly reduce the incidence of dry eye and the severity of the occurrence: 1. Keep your eyes moist: moisture will evaporate when exposed to air or specific climate, in order to save as much of your tears as possible, it is recommended to take the following preventive measures to reduce tear evaporation. (1) Keep the room humidity between 30 and 50 percent. Add a humidifier in an air-conditioned room to add humidity to dry room air; (2) Avoid direct eye contact with hair dryers, heat dryers, and electric fans; (3) Always wear eye protection on windy days; (4) Remember to blink: When reading with your eyes, especially when on a computer or cell phone, remember to take some time to blink. 2. Check the medications you are currently using The inappropriate use of some medications can directly damage the tear film of the eye surface and destroy the epithelial cells of the eye surface, leading to dry eyes, such as anti-viral eye drops, simple decongestant eye drops containing naphazoline that constrict small blood vessels, and eye drops containing toxic preservatives. Therefore, it is recommended to go to a professional doctor and try to avoid the use of drugs that may cause dry eye aggravation. 3. Pay attention to your diet and physical health is important to keep your eyes moist. (1) Avoid smoking and alcohol; avoid spicy and stimulating foods, etc.; (3) Consume oil with meat and vegetables, and increase the intake of omega-3 fatty acids; (4) Eat at least one kind of fruit every day, and fresh vegetables are essential; (5) Some foods and drinks can dehydrate your eyes and body, such as: chocolate, cola; coffee and tea both contain caffeine, and caffeine can consume body water, in order to keep the body with In order to keep the body with sufficient water, we should drink more water properly (normal human body should drink at least six glasses of water a day, about 1500ml).