Syah, M. M. ., . A. H. . Sofian Sauri, . K. . Mohd Kamal, and M. . Mokhtar. “Comparison Between Point-Based and Ring-Based Technologies in Keratometric Measurement Among Post Myopic Laser Refractive Surgery Patients”. IIUM Medical Journal Malaysia, vol. 16, no. 1, June 2017, doi:10.31436/imjm.v16i1.1140.