NASIR, M. S., M. R. HILMI, K. MOHD KAMAL, M. Z. CHE AZEMIN, N. N. MARUZIKI, N. H. MUSA, and N. A. NORAZMAR. “THE COMPARISON OF SHAPE FACTOR AND MEAN TORIC KERATOMETRY BETWEEN PTERYGIUM AND NORMALS”. INTERNATIONAL JOURNAL OF ALLIED HEALTH SCIENCES, vol. 3, no. 4, Dec. 2019, pp. 848-53, doi:10.31436/ijahs.v3i4.155.