Chui, Juanita, and Keith Ong. “Improving the Prediction of Effective Lens Position for Intraocular Lens Power Calculations”. Asian Journal of Ophthalmology 17, no. 2 (April 30, 2020): 233-242. Accessed March 4, 2021. https://asianjo.com/index.php/AsianJO/article/view/585.