A millimetric ruler for Lester Jones tube placement in conjunctivodacryocystorhinostomy

Abstract

Purpose: To describe the use of a ruler to increase the accuracy and customization of Lester Jones tube placement. Materials and methods: This was a review of 92 patients who underwent minimally invasive conjunctivodacryocystorhinostomy using this instrument. Results: The success rate was 100%, with an average operating time of 15 minutes. In nine patients, late migration of the Jones tube into the nasal cavity required a secondary intervention, with successful Jones tube repositioning. In five cases, obstruction of the tube opening was caused by conjunctival overgrowth. Conclusion: The millimetric ruler engraved in the sleeve of the trocar allows measuring and placing a personalized tube for each patient.