Bustamam, A., Department of Mathematics, Faculty of Mathematics and Natural Science, Universitas Indonesia, Depok, Indonesia; Sarwinda, D., Department of Mathematics, Faculty of Mathematics and Natural Science, Universitas Indonesia, Depok, Indonesia; Paradisa, R.H., Department of Mathematics, Faculty of Mathematics and Natural Science, Universitas Indonesia, Depok, Indonesia; Victor, A.A., Department of Ophthalmology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia; Yudantha, A.R., Department of Ophthalmology, Faculty of Medicine, Universitas Indonesia, Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia; Siswantining, T., Department of Mathematics, Faculty of Mathematics and Natural Science, Universitas Indonesia, Depok, Indonesia