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Updated: Apr 4, 2026

The Rigid Tube as an Alternative in Controlling the Problematic Airway
Published on: June 6, 2020
A millimetric ruler for Lester Jones tube placement in conjunctivodacryocystorhinostomy
Rodolfo Luis Vigo1, Tomás Ortiz-Basso1, María Natalia Vilas1
1Ophthalmology Department, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina.
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.
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