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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
Summary
This study introduces dacryocystoscopy, a novel endoscopic technique for examining the nasolacrimal system. The method shows potential for diagnosing and treating various nasolacrimal disorders.
Area of Science:
- Ophthalmology
- Surgical Innovation
Background:
- Nasolacrimal system disorders are common.
- Current diagnostic and treatment methods have limitations.
Purpose of the Study:
- To describe a new endoscopic technique, dacryocystoscopy, for visualizing the nasolacrimal system.
- To evaluate the feasibility of using ultrathin fiberscopes for this procedure.
Main Methods:
- Performed orthograde and retrograde endoscopy of the nasolacrimal system.
- Utilized two prototype ultrathin fiberscopes (0.5 mm and 1.1 mm diameter).
- Conducted on four human cadaver heads, with findings verified by dissection.
Main Results:
- Successfully visualized both upper and lower portions of the nasolacrimal system.
- The dacryocystoscopy procedure was described in detail.
- Cadaveric appearances correlated with subsequent dissection findings.
Conclusions:
- Dacryocystoscopy is a feasible endoscopic technique for nasolacrimal system examination.
- The described method, with modifications, holds potential for clinical applications in treating nasolacrimal disorders.
