Amalia, R., Department of Mathematics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, 16424, Indonesia; Bustamam, A., Department of Mathematics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, 16424, Indonesia; Yudantha, A.R., Department of Ophthalmology, Faculty of Medicine, Universitas Indonesia Cipto Mangunkusumo National General Hospital, Jakarta Pusat, 10430, Indonesia; Victor, A.A., Department of Ophthalmology, Faculty of Medicine, Universitas Indonesia Cipto Mangunkusumo National General Hospital, Jakarta Pusat, 10430, Indonesia