Related Experiment Video
Updated: Sep 14, 2025

Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction
Published on: October 13, 2017
Magnetic removal of fragmented Crawford hook during nasolacrimal duct probing
Sang Nguyen1, Benjamin Brownlee2, C Eric Holland3
1University of Oklahoma College of Medicine, Oklahoma City, Oklahoma.
Abstract:
We present the case of a 13-month-old girl with Down syndrome who underwent probing to alleviate nasolacrimal duct obstruction (NLDO). During the procedure, a distal portion of the deployed Crawford hook fragmented and became lodged in the right nasopharynx. Traditional intraoperative methods of visualization were unsuccessful; however, extraction of the fragment was achieved by using a nasogastric bridle magnet. This case demonstrates a novel method of metallic foreign body removal, which may be useful when exact location cannot be determined.

