Mazhar ul Hasan, Saba Alkhairy, and Nimra Akram. “Prevalence of Refractive Errors Among the Madrassah Students of Karachi and Sukkur”. Pakistan Journal of Medical Research 64, no. 4 (January 29, 2026): 177–181. Accessed August 11, 2026. https://pjmr.org.pk/index.php/pjmr/article/view/1389.