Related Experiment Video
Updated: Apr 3, 2026

Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction
Published on: October 13, 2017
Long-term success in the correction of exposed glaucoma drainage tubes with a tube extender
Kevin D Merrill1, Abraham W Suhr, Michele C Lim
1Department of Ophthalmology & Vision Science, University of California, Davis, Sacramento, California 95817, USA.
Purpose:
To report long-term success of surgical correction of exposed glaucoma drainage device (GDD) tubes with a commercially available tube extender.
Design:
Observational case series.
Methods:
Chart review of surgical correction for GDD tube exposure by rerouting the tube using the New World Medical Tube Extender (NWMTE; New World Medical, Rancho Cucamonga, California, USA).
Results:
Surgical revision of GDD tube exposure with the NWMTE controlled intraocular pressure without repeat exposure up to three years after surgery.
Conclusions:
A tube extender can provide long-term correction of an exposed GDD tube by bypassing weakened tissue, thus avoiding or delaying a second implant surgery.
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