Delhi Journal of Ophthalmology

Success Rate of Primary Probing in Congenital Nasolacrimal Duct Obstruction in Different Age Groups

Pratistha Chhipa, Anshu Sahai, Gopal Krishna Trivedi, Lokendra Tyagi, Mohammad Abid Shamshad, Shalini Gupta
Sahai Hospital and Research Centre, Jaipur, Rajasthan, India

Editor-in-Chief, Delhi Journal of Ophthalmology, Dr R.P.Centre, AIIMS.

Corresponding Author:

Pratistha Chhipa MBBS
SP-15, Sahai Hospital and Research Centre,
Bhabha Marg,
Jaipur, Pin - 302004,
Rajasthan, India
Email id:

Received: 10-JAN-2019 Accepted: 03-MAR-2019 Published Online: 08-MAY-2019

AbstractAim: To study the success rate and safety of primary probing for Congenital Nasolacrimal Duct Obstruction (CLNDO) at various ages and to analyse the outcome of probing in different types of obstruction.
Setting and Design: A hospital-based, prospective, interventional study.
Materials and Methods: One hundred twelve eyes of 97 children with CNLDO in the age group of 6 to 48 months with history of epiphora (fulfilling the inclusion criteria) were included. After unsuccessful lacrimal sac massage and topical antibiotics instillation for 6 weeks or more, probing was performed under general anaesthesia by a single surgeon.
Statistical Analysis: Bivariate analysis with selected socio demographic variables like age, sex etc was performed among groups using Chi square test.
Results: The most common type of obstruction found on probing was membranous in 98 eyes (87.5%) and osseous in 14 eyes (12.5%). The overall success rate of primary probing in CNLDO in our study was 85.71% (95% CI: 77.8-91.6, p<0.0001). The highest success rate of 96.77% was found in the age group 6-12 months and lowest success rate of 50% was found in the age group of 24-36 months (95% CI:23.0-76.9, p=1) and 36-48 months (95% CI:1.2-98.7, p=1). This depicts that the success rateof probing decreases as the age of patient at the time of primary probing increases.
Conclusion: As the age of children increases, the incidence of osseous type of obstruction increases, resulting in lower success rate in the older age group.

Keywords :CNLDO, Membranous obstruction, Osseous obstruction, Epiphora