Abstract: Objective To investigate the safety, feasibility and clinical efficacy of nasal endoscopic dacryocystorhinostomy (NES-DCR) for children complexity lacrimal duct obstruction. Design Retrospective case series. Participants Children complexity lacrimal duct obstruction 20 cases (25 eyes). In which, 14 cases (19 eyes) of congenital nasolacrimal duct obstruction with bony lacrimal duct dysplasia; 6 cases (6 eyes) of traumatic lacrimal duct obstruction. Methods Under the nasal endoscopic direct dacryocystorhinostomy with or without joint of lacrimal duct expansion of silicone tube implantation was performed. After 3 months, lacrimal duct expansion pipe was taken off. Follow-up 6 ~ 18 months. The situation of the postoperative symptoms, the smooth of the lacrimal passage, the size and opening of the anastomotic, and the complications were observed. The efficiency was evaluated. Main Outcome Measures The cure rate, effective rate, and the complications. Results The total effective rate was 96%, only 1 case had no effect, who was a traumatic dacryocystitis patient. The effective rate was 100% in the congenital osseous anomalies group, and the cure rate was 94.4%; the effective rate was 83.3% in the trauma group, and the cure rate was 50%. No obvious postoperative complications were observed during the follow-up period. Conclusion The nasal endoscopic dacryocystorhinostomy (NES-DCR) provides children complexity lacrimal duct obstruction a relatively safe and effective treatment, especially for the congenital nasolacrimal duct obstruction merge bony nasolacrimal duct dysplasia cases.

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complexity lacrimal duct obstruction/surgery, nasal endoscopic dacryocystorhinostomy, nasal endoscopic, children