Endoscopic dacryocystorhinostomy: long-term experience and outcomes.

Purpose: To report our experience in endoscopic dacryocystorhinostomy in treating nasolacrimal duct obstruction over a 14-year period.

Methods: Retrospective case series carried out over a 14-year period from 1999 to 2014. A total of 624 endoscopic dacryocystorhinostomy procedures were performed in 442 patients who were diagnosed with persistent epiphora.