Khan, Fatima, Sadia Humayun, Imran Basit, Bushra Akbar, Fazla Younis, and Mazhar Ishaq. 2020. “COMPARISON OF BIOMETRIC PARAMETERS AND THE LEVEL OF AGREEMENT BETWEEN OB820 AND IOL MASTER”. Pakistan Armed Forces Medical Journal 70 (3):867-72. https://www.pafmj.org/PAFMJ/article/view/4762.