1. Department of Ophthalmology, Faculty of Medicine, Erzincan University, Erzincan, Turkey;
2. Department of Ophthalmology, Erzurum Regional Training and Research Hospital, Erzurum, Turkey;
3. Department of Pathology, Faculty of Medicine, Atatürk University, Erzurum, Turkey;
4. Department of Biochemistry, College of Medicine, Atatürk University Hospital, Erzurum, Turkey;
5. Department of Pharmacology, Faculty of Medicine, Erzincan University, Erzincan, Turkey