Dulal, S, and Y D Sapkota. “Prevalence of Blindness and Visual Impairment and Its Causes Among People Aged 50 Years and above in Karnali Zone, Nepal”. Nepalese Journal of Ophthalmology 4, no. 2 (July 26, 2012): 282–287. Accessed October 14, 2024. https://nepjol.info/index.php/NEPJOPH/article/view/6545.