It is a common condition of the first year of life. Infants with narrowing or obstruction of the nasolacrimal duct, show chronic tearing and secretions, due to poor patency of the duct to the nose. Pooled tears are contaminated by the local microbes. Waiting, local massages and antibiotic drops are recommended in severe infections. Catheterization is required in 20% of these infants, since 80% heal on their own. Catheterization success rates are over 90% when done at the right time. In the wrong time, the success rates decrease.