The best time for tear duct irrigation in infants is within 4-6 months after birth. Tear duct irrigation can be used for the diagnosis and treatment of lacrimal tract disorders. Often, children with ophthalmologic conditions such as lacrimal stenosis, blockage of the lacrimal duct, and neonatal dacryocystitis can first be treated conservatively, such as massage of the lacrimal sac area, or anti-inflammatory treatment with antibiotic eye drops. In some children, the condition may remit with growth and development in combination with conservative treatment. Those whose symptoms do not resolve after 4-6 months of conservative treatment can be treated with tear duct irrigation or lacrimal duct exploration surgery. In infants who are too young, tear ducts are too thin, and lacrimal duct irrigation and surgical manipulation can cause unnecessary tear duct damage. In the case of congenital tear duct incompetence, surgical treatment can be done after 8 months of life. Patients are advised to cooperate with the surgeon during tear duct irrigation. If mucosal damage is caused by tear duct flushing, a light red fluid will appear, which usually relieves in 2-4 days, so parents need not worry too much.