Muhammad Sharjeel, Hafiza Sadia Imtiaz, Muhammad Abbas, Memona Mohiuddin.
Comparison of Therapeutic Probing with and without Viscoelastic Gel for Congenital Nasolacrimal Duct Obstruction.
Al-Shifa J Ophthalmol Jan ;16(1):43-51.

This study was conducted to determine the therapeutic role of probing in CNLDO and to compare the success rate and complication rate of probing with viscoelastic substance and probing without viscoelastic substance. Patients of either gender between 9-24 months of age, with unilateral or bilateral CNLDO that failed to resolve after 3 months of conservative treatment were enrolled into this study. Probing was performed in Group A with viscoelastic gel and in group B without viscoelastic gel. Complication rate and the differences between two groups in terms of success were reported.

PakMediNet -Pakistan's largest Database of Pakistani Medical Journals - http://www.pakmedinet.com