Tearlessness is an eye disease that cannot be cured, and patients can only improve their symptoms by reducing tear evaporation or replenishing tears in two ways, specifically by using artificial tears, or by using special moisturizing glasses to avoid water evaporation, or by surgical treatment to reduce tear elimination such as tear point closure and surgical treatment to increase tear secretion by replacing tear secretion with sublingual gland transplantation. The diet should be regular and reasonable, i.e., high protein and high vitamin foods. Choose vegetable or animal proteins with high nutritional value, such as milk, eggs, fish, lean meat, various soy products, etc. A variety of fresh vegetables, fruits and vegetables are rich in vitamins and have high nutritional value. We can consume more fruits and vegetables such as carrots, dates, oranges and tomatoes, or supplemented by deep-sea fish and cod liver oil. You can also consume more dark green vegetables and various fruits to supplement vitamin C. In addition, you can get enough vitamin E through plant seeds, such as peanuts, walnuts and pine nuts. Zinc and protein are indispensable for retinal health. Zinc can be supplemented by consuming liver, kidney, seafood, dairy, cereals, legumes, hard fruits, etc. Lean pork, beef, lamb, chicken and duck, animal offal, milk, fish and legumes are rich in protein.