Objective: The aim of this study is to find out the ration of success in the initial probing for the congenital nasolacrimal duct obstruction at age 25th month to 60th month. Methodology: The study was prospective non-comparative interventional case series. The study included 59 eyes of 47 patients who visited the Ophthalmology HMC Peshawar in 2020. The patients were labelled as CNLDO with history of epiphora and or discharge since birth or first few days of life. The diagnosis was confirmed with evaluation in which it was assessed that there is no other associated adnexal issue like conjunctively congestion. Examination also included tear meniscus height and resurge test. Results: In prospective non-comparative interventional case series 52 eyes of 41 patients between the ages of 25 to 60 months with CNLDO were probed. Most of the patients were females i.e. 27. Most of the obstructions were of complex type i.e. 32 while 20 patients were of membranous type. Patients with bilateral CNLDO were 11. Successes ratio of probing in membranous type of obstruction was 90% i.e. 18 eyes got cured while two eyes needed repeated probing. While in case of complex obstruction the success ratio was, 32.2 % i.e. only 10 patients got cured out of 32 patients. Overall success ratio was 54% i.e 28 of 54. Conclusion: Children presenting with congenial nasolacrimal duct obstruction in older ages should be probed initially.
