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 melons are rich in vitamins and have high nutritional value. You can eat more fresh fruits and vegetables to ensure the intake of vitamins.