Can Lacrimal Sac Washout Predict Outcomes of Endoscopic DCR

Objective: High success rates for endoscopic dacryocystorhinostomy (END-DCR) in partial nasolacrimal duct obstruction (NLDO) have been reported, but comparisons with complete NLDO are lacking. This study compares the success of primary END-DCR with respect to the preoperative nasolacrimal duct patency and reviews factors associated with failure.Method: Retrospective review of END-DCRs performed at a tertiary referral center. Partial and complete NLDO were defined by the presence or absence of flow into the nose with lacrimal sac washout (SWO), respectively. Intraoperative findings including thickness of bone, level and state of the common canaliculus, state of inflammation, and contents of the lacrimal sac during END-DCR were recorded. For patients with at least 3 months follow-up, the outcome of resolution of epiphora (none/partial/complete), postop Jones 1 (J1; positive/ negative) and endoscopy of the neo-ostium (closed/partially or fully-open) were defined.Results: A total of 245 primary END-DCRs were ...