HILMI, M. R., N. H. . MUSA, K. . MOHD KAMAL, M. Z. CHE AZEMIN, N. N. . MARUZIKI, N. A. . NORAZMAR, and M. S. . NASIR. “CHANGES IN APICAL CORNEAL CURVATURE IN UNILATERAL PRIMARY PTERYGIUM AND NORMAL ADULTS USING SIMULATED-K AND CORNEAL IRREGULARITY MEASUREMENT”. INTERNATIONAL JOURNAL OF ALLIED HEALTH SCIENCES, vol. 3, no. 2, Aug. 2019, pp. 588-94, https://journals.iium.edu.my/ijahs/index.php/IJAHS/article/view/151.