Clinical Evaluation of Endoscopic Endonasal Conjunctivodacryocystorhinostomy (CDCR) with Jones Tube Placement

Purpose: To evaluate the efficacy of endoscopic endonasal primary conjunctivodacryocysto-rhinostomy (CDCR) and revision CDCR after primary CDCR. Methods: Twenty patients who had undergone endoscopic endonasal CDCR with Jones tube and who were followed for over 6 months at our hospital were reviewed retrospectively. Our analysis included success rate, operation time and causes of failure. Results: The indications for revision CDCR were prolapse of Jones tube and inadequate tube length. The initial success rate in the primary and revision groups was 78.6% (11/14) and 100% (6/6), respectively. Two initial failures in the primary group were later successful after revision. The mean operation time in the groups was 23.9 minutes (6.3) and 21.7 minutes (6.1), respectively. The main causes of failure included inaccurate tube length and abnormal tube position. Conclusions: Endoscopic endonasal CDCR appears to be a reasonable approach for revision, as well as primary, because of accurate measurement of Jones tube length during surgery and the shortened operation time.