Malik, C., M. S. Bhatia, and U. Dhaliwal. “Factors Affecting the Time Lag to the Second Eye Cataract Surgery in a Hospital-Based Population”. Nepalese Journal of Ophthalmology, vol. 6, no. 1, July 2014, pp. 31-38, doi:10.3126/nepjoph.v6i1.10761.