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Updated: Jul 28, 2026

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Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction
Published on: October 13, 2017
Endoscopic visualisation of the human nasolacrimal system: an experimental study
A D Singh1, A Singh, I Whitmore
1Department of Ophthalmology, North Middlesex Hospital, London.
The British Journal of Ophthalmology
|November 1, 1992
Abstract:
Orthograde and retrograde endoscopy of the upper and lower nasolacrimal system was performed using two prototype ultrathin (0.5 mm and 1.1 mm diameter) fibrescopes on four cadaver heads. Appearances were verified by subsequent dissection. The procedure, which we term 'dacryocystoscopy' is described. With modifications this technique may have clinical applications in the treatment of nasolacrimal disorders.

