Tearlessness, an eye disease that cannot be cured, can only be improved by reducing tear evaporation or replenishing tears, either by using artificial tears, or by using special moisturizing glasses to avoid water evaporation, or by surgical treatment such as tear spot closure to reduce tear elimination and sublingual gland transplantation to increase tear secretion instead of tear secretion. Preventive measures include avoiding marriage between close relatives, promoting preventive measures including avoiding marriage between close relatives, promoting genetic counseling, carrier genetic testing and prenatal diagnosis and selective abortion to prevent the birth of affected children. Living a moderate life, paying attention to rest, combining work and rest, living an orderly life, and maintaining an optimistic, positive and upbeat attitude in life can help a lot in preventing the disease. Do have regular tea and meals, survive and live regularly, do not overwork, be cheerful and develop good living habits. Maintain an optimistic and happy mood. Long-term mental tension, anxiety, irritability, pessimism and other emotions will make the balance of cortical excitation and inhibition processes out of balance, so you need to maintain a happy mood. A reasonable diet with high fiber and fresh vegetables and fruits, balanced nutrition, including protein, sugar, fat, vitamins, trace elements and dietary fiber and other essential nutrients, meat and vegetables, diversified food varieties, giving full play to the complementary role of nutrients between foods, is also very helpful in the prevention of this disease.