Megala, M., S. Dhamodharan, M. Duraimurugan, and K. Chellavel Ganapathi. 2020. “A Study on Prevalence of Refractive Error and Its Associated Factors Among School Children in Tamil Nadu”. International Journal Of Community Medicine And Public Health 7 (5):1880-83. https://doi.org/10.18203/2394-6040.ijcmph20201999.