1. Oculoplastic Division, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
2. Department of Ophthalmology, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
3. Diagnostic Imaging Department, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
4. Pathology Department, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
5. Ophthalmology and Pathology departments, King Saud University, Riyadh, Saudi Arabia
6. Ophthalmology Department, Medical School, State University of Sao Paulo, São Paulo, Brazil