Surgical Outcomes of Endonasal Conjunctivodacryocystorhinostomy According to Jones Tube Location
The aim of this study was to compare surgical outcomes and complications of endonasal conjunctivodacryocystorhinostomy (CDCR) according to Jones tube location.Methods:
Patients who underwent endonasal CDCR owing to proximal obstruction of the lacrimal drainage system between 2009 and 2016 were retrospectively reviewed. Patients were divided into 2 groups according to the location of the proximal end of the Jones tube. The canthal-based group included patients in which the proximal end of the Jones tube was located in the medial canthal angle, and the fornix-based group included patients in which the proximal end of the Jones tube was located in the inferomedial conjunctival fornix. Success rates were evaluated at 3 months and 6 months after surgery. Causes of failure, incidence of tube migration, and incidence of canthal deformity were also evaluated.Results:
The success rate at 3 months postoperative was 95% in the canthal-based group and 78.6% in the fornix-based group (P = 0.283). Success rates at 6 months postoperative were 85% in the canthal-based group and 71.4% in the fornix-based group, respectively (P = 0.410). The main cause of failure was granuloma in the canthal-based group (2/20) and medial migration in the fornix-based group (3/14). Medial canthal deformity occurred in 12 of 20 cases in the canthal-based group, but none occurred in the fornix-based group.Conclusion:
The canthal-based group had a lower migration rate and slightly better surgical success rate than the fornix based group, but canthal deformity was more prevalent.