Foods that protect vision include pig liver, oranges, blueberries, cauliflower, etc. Patients with vision abnormalities should seek medical attention to identify the cause of the problem and get targeted treatment if necessary. Vitamin A is also known as retinol. Foods rich in vitamin A such as pork liver, lean meat and carrots are effective for vision loss and night blindness caused by vitamin A deficiency. Foods rich in vitamin C, anthocyanins and lutein such as oranges, kiwi, spinach, tomatoes, blueberries and cauliflower can also protect vision to a certain extent. In addition to food, you should avoid prolonged over-exertion of your eyes on a daily basis, and the time you spend reading and watching TV should be properly controlled to prevent eyestrain, as well as to stay away from adverse environments such as bright light exposure. For elderly patients with impaired vision, such as cataracts, glaucoma and other causes of vision loss, can not be restored through food, available vision aids, such as electronic vision aids, etc., if necessary, surgical treatment, etc.. If vision loss and other abnormalities occur, you need to go to the hospital for a comprehensive examination, after clarifying the cause of the disease to carry out symptomatic treatment, do not blindly look forward to food cures, so as not to delay the condition.