Mazhar ul Hasan, Saba Alkhairy, & Nimra Akram. (2026). Prevalence of Refractive Errors among the Madrassah Students of Karachi and Sukkur. Pakistan Journal of Medical Research, 64(4), 177–181. Retrieved from https://pjmr.org.pk/index.php/pjmr/article/view/1389