Surgical anatomy of the lacrimal fossa a prospective computed tomodensitometry scan analysis.

Purpose: To establish the accurate surgical anatomy of endonasal dacryocystorhinostomy (DCR) based on the radiological analysis of underlying bony structures.

Design: Prospective noncomparative observational case series study.

Participants: Fifty-nine patients with complete nasolacrimal stenosis underwent a computed tomodensitometry (CT) scan before endonasal DCR.