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Updated: Jun 24, 2026

Transcanalicular Diode Laser-assisted Dacryocystorhinostomy for the Treatment of Primary Acquired Nasolacrimal Duct Obstruction
Published on: October 13, 2017
[Management of congenital nasolacrimal duct obstruction]
Epaminondas Castelo Branco Neto1, Bruno Castelo Branco, Camila Correa Cardoso
1Faculdade de Medicina da Universidade Federal da Bahia - Salvador (BA) - Brasil. ecbranco@uol.com.br
Insights
The Crigler method, using hydrostatic pressure, effectively treats congenital nasolacrimal duct obstruction in infants. This study shows a high success rate with this non-invasive approach for blocked tear ducts.
Area of Science:
- Ophthalmology
- Pediatric Medicine
Background:
- Congenital nasolacrimal duct obstruction (CNLDO) is a common condition in infants.
- Early intervention is crucial to prevent complications such as dacryocystitis.
Purpose of the Study:
- To evaluate the efficacy of the Crigler method (hydrostatic pressure) for treating CNLDO.
- To determine the success rate of this non-surgical treatment.
Main Methods:
- Retrospective review of clinical data from 186 children (up to 32 months old).
- Treatment involved hydrostatic pressure massage, repeated up to three times weekly.
- Statistical analysis using chi-square and Kruskal-Wallis tests.
Main Results:
- The primary age group treated was 1-5 months (56.4%).
- The Crigler method achieved cure in 43.6% with one session, 23.3% with two, and 17.4% with three sessions.
- 14 cases unresponsive to massage were successfully treated with probing.
Conclusions:
- The Crigler method demonstrates significant effectiveness in managing congenital nasolacrimal duct obstruction.
- Hydrostatic pressure offers a successful non-surgical option for infant tear duct blockage.
Purpose:
To present the success rate in treating congenital nasolacrimal duct obstruction with hydrostatic pressure (Crigler method).
Methods:
Clinical data from 186 children aged up to 32 months treated from 1990 until 2005 were reviewed retrospectively. The procedure was repeated up to 3 times at a one week interval. Using EPI INFO version 6.04 software for analysis, data were tabulated and statistical significance was evaluated by applying chi-square and Kruskal-Wallis tests.
Results:
Leading age group was 1 to 5 months old (56.4%) for males and females. Affection was bilateral in 36.3%, 34.1% on right side and 29.6% on the left side. All cases had epiphora and 56.5% presented mucopurulent discharge. Cure was achieved with one massage for 43.6%, 23.3% with two, 17.4% with three and, with 4 and 5+ sessions in respectively 5.8% and 9.0%. Those 14 cases who did not respond to massage were treated with probing.
Conclusion:
The Crigler method was effective in managing congenital nasolacrimal duct obstruction cases.
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