Related Experiment Video
Updated: Jul 18, 2026

Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction
Published on: October 13, 2017
Clinical study of endoscopic endonasal conjunctivodacryocystorhinostomy with Jones tube placement
Min Soo Park1, Mi Jung Chi, Se Hyun Baek
1Kong Eye Medical Center, Gachon University Gil Medical Center, Incheon, Republic of Korea.
Purpose:
To evaluate the efficacy of endoscopic endonasal primary conjunctivodacryocystorhinostomy (CDCR) and revision CDCR after primary CDCR.
Methods:
Twenty-four patients who had undergone endoscopic endonasal CDCR with a Jones tube and who were followed up for over 6 months at our hospital were reviewed retrospectively. Our analysis included success rate, operation times, and causes of failure.
Results:
The indications for revision CDCR were Jones tube prolapse and inadequate tube length. The initial success rate in the primary and revision groups were 78.6% (11/14) and 100% (10/10), respectively, and their mean operation times were 24 min (+/- 6.3) and 21 min (+/- 6.1), respectively. Main causes of failure included inaccurate tube length and abnormal tube position.
Conclusions:
Endoscopic endonasal CDCR appears to be a reasonable revision and primary approach, because it allows Jones tube length to be measured accurately during surgery, and an 18- to 20-mm Jones tube length was used in most cases.
More Related Videos
Related Concept Videos
Endoscopic Studies I: Bronchoscopy and Thoracoscopy
Bronchoscopy
Description
Bronchoscopy is a procedure that involves direct visualization of the larynx, trachea, and bronchi for diagnostic and therapeutic purposes. A flexible fiber optic or rigid bronchoscope is used to carry out the procedure. The fiber-optic bronchoscope is more frequently used due to...
Endoscopic Studies II: Thoracocentesis
Description
Excess pleural fluid or air may accumulate in some respiratory disorders in the thoracic cavity. To treat pleural effusion, a physician conducts thoracentesis by carefully piercing the chest wall and entering...
Angle Closure Glaucoma: Treatment
Endoscopic Procedures III: Video Capsule Endoscopy
Open Angle Glaucoma: Treatment
Drugs such as carbonic anhydrase inhibitors, α2- and...
Tracheostomy: Procedure and Tubes
Tracheostomy tubes can be made of semiflexible plastic (polyurethane or silicone), rigid plastic, or metal, and they come in...
