Nuzhat Rahil, Adnan Ahmed, Rahil Aumir Malik.
Effectiveness of first Probing in Children with Congenital Nasolacrimal Duct Obstruction & its Pattern in different age Groups.
Ophthalmol Update Jan ;12(1):10-3.

Objective: To determine the effectiveness of first probing in children with congenital nasolacrimal duct obstruction and its pattern in different age groups. Materials & Methods: This descriptive case series study was conducted at Eye Operation Theatre, Eye Department, Lady Reading Hospital Peshawar. Duration of the Study was 6 months (from October 2011 to March 2012), in which a total of 165 patients were observed, using success rate of first probing for CNLDO to be 70%,with 95% confidence interval and 7% margin of error under WHO sample size calculations, in which a consecutive (Non probability) sampling technique was used. Effectiveness of first probing procedure among 165 childrens was analyzed. Results: In this study, 66(40%) childrens were in the age range of 1-2 years, 53(32%) childrens were in age range 3-4 years and 46(28%) childrens were in age 4-5 years. Mean age was 3 years with standared deviation ±1.28. Ninety six (58%) childrens were male while 69(42%) childrens were female. Effectiveness of first probing procedure among 165 childrens was analyzed. First probing procedure was effective in 134(81%) childrens while it was not effective in 31(19%) childrens. Conclusion: Congenital nasolacrimal duct obstruction is a common paediatric pathology seen in ophthalmology out patient. Probing is carried out in unresponsive cases after the age of 6 months and had very good results. We recommend that parents should be properly guided about conservative treatment and lacrimal sac passage probing should be performed in those cases where there is no improvement with proper continuous conservative treatment.

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