1. Kanuni Research and Training Hospital, Department of Neurosurgery, Trabzon, Turkey
2. Medical Faculty, Department of Neurosurgery, Recep Tayyip Erdogan University, Rize, Turkey
3. Medical Faculty, Department of Neurology, Giresun University, Giresun, Turkey
4. Department of Opthalmology, Giresun University Medical Faculty, Giresun, Turkey
5. Medical Faculty, Department of Opthalmology, Recep Tayyip Erdogan University, Rize, Turkey
6. Medical Faculty, Department of Neurology, Recep Tayyip Erdogan University, Rize, Turkey