This podcast will provide an approach to nasolacrimal duct obstruction. This podcast was written by Bo Bao, a medical student at the University of Alberta, in conjunction with Dr. Natashka Pollock, a pediatric opthalmologist at the Stollery Children's Hospital. After listening to this podcast, the learner should be able to: define nasolacrimal duct obstruction, develop a differential diagnosis for an infant with persistent tearing, recognize the clinical signs and symptoms of nasolacrimal duct obstruction, and discuss management of patients with nasolacrimal duct obstruction.