Sujatha, G., Vasantha, G., Krishna, N. and Vandana, D. (2021) “Efficacy of probing in congenital nasolacrimal duct obstruction in paediatric patients: A prospective observational study in a tertiary care teaching hospital Telangana India”, International journal of health sciences, 6(S9), pp. 2373–2380. doi: 10.53730/ijhs.v6nS9.12944.