Corneal fistula is a sequelae of corneal ulcer perforation or penetrating trauma to the cornea and is difficult to heal on its own. When corneal fistula is diagnosed, early surgical treatment is recommended. 1, develop good personal hygiene habits, always pay attention to clean, often soap hand washing, and keep dry. 2, avoid rubbing your eyes with your hands. There are many harmful effects of rubbing your eyes with your hands, especially for children. Children are very active, small hands always get very dirty, rubbing eyes with dirty hands, will bring some germs into the eyes, causing eye inflammation, and sometimes also the hands of the sand rubbed into the eyes. 3.Avoid going to crowded public places as much as possible during the epidemic. 4, during the epidemic period should try to avoid swimming in public swimming pools. 5.Avoid shaking hands with patients and touching towels, soap, bedding, door handles, faucets, etc. used by patients. 6.After the patient has recovered, the used quilts and towels should be washed and completely exposed to the sun. 7, patients should maintain physical and mental health, do not sleep late, do not drink, do not smoke, etc., in order to effectively prevent or reduce the symptoms. 8, to pay attention to the usual diet nutritional health, to protect the eyes is not just a drop of advanced eye drops, from the diet is more important to do. Because the eyes need tears to moisten, and tears contain a variety of nutrients, the most important of which is vitamin B2; the process of seeing things requires the participation of vitamin A; optic nerve conduction and the need for vitamin B help; to prevent the aging of the eyes need healthy blood vessels, vitamin C and vitamin E is very helpful. Vitamin A is a vitamin that we Chinese tend to be deficient in. In the absence of vitamin A, the eyes often feel dry, astringent, easily fatigued, and in severe cases, the white surface of the eyes is dry and wrinkled, even leading to corneal ulcers. Before these symptoms occur, a person’s dark vision has been reduced and dark adaptation ability is poor, that is, it is difficult to adapt when going from light to dark for a long time. Vitamin A supplementation should include more liver, milk, egg yolk, green leafy vegetables, carrots, and sweet potatoes. Lack of vitamin B2 tends to inflame the corners of the mouth, lips and tongue, and also makes the eyes dense with blood, afraid of light, and prone to tears. 9, avoid excessive use of the eyes, prolonged use of the eyes and cause excessive use of the eyes, is a major cause of eye fatigue. The general symptoms of eye fatigue are blurred vision for a long time, some even unable to write or read, dry eyes, dizziness and pain, and in severe cases, nausea and vomiting. In addition, eye strain also leads to myopia or premature blurring in adults, and various eye diseases can come along with excessive eye use. Protect your eyes, prevent vision damage, reduce eye strain, ensure appropriate light, maintain proper operating posture, ensure rest and do eye exercises.