1. Department of Ophthalmology, Gazi University Faculty of Medicine, Ankara, Turkey
2. Department of Ophthalmology, Kagizman State Hospital, Kars, Turkey
3. Department of Ophthalmology, Yildirim Beyazit University Faculty of Medicine, Ankara, Turkey
4. Department of Pathology, Yildirim Beyazit University Faculty of Medicine, Ankara, Turkey