1. Department of Neurosurgery, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpaşa, İstanbul, Turkey;
2. Department of Neurosurgery, Okmeydani Training and Research Hospital, Health Sciences University, İstanbul, Turkey;
3. Department of Ophtalmology, Başakşehir Çam Sakura City Hospital, Health Sciences University, İstanbul, Turkey;
4. Department of Ophthalmology, Cerrahpasa Medical Faculty, Istanbul University-Cerrahpasa, İstanbul, Turkey