Fauzi, Liliyanti, and Tiara Bunga. “Basic Concept of Ophthalmology and Visual Disorder”. Sriwijaya Journal of Ophthalmology 5, no. 1 (January 13, 2022): 178-189. Accessed January 22, 2022. https://sriwijayaopthalmology.com/index.php/sjo/article/view/67.