PR PR PR PREVALE EVALE EVALE EVALENCE OF DRY EYE SYNDROME IN NCE OF DRY EYE SYNDROME IN NCE OF DRY EYE SYNDROME IN NCE OF DRY EYE SYNDROME IN BENI BENI BENI BENI-SUIEF POPULATION SUIEF POPULATION SUIEF POPULATION SUIEF POPULATION Thesis Submitted in partial fulfillment of M.Sc. Degree In Ophthalmology By Ahmed Mohamed Tawfeek M.B.,B.Ch Beni-Suief University Supervised by Prof. Dr. Sherif Ahmed Kamel Assist. Professor of Ophthalmology Beni-Suief University Prof. Dr. Prof. Dr. Mohamed Yasser Sayed Saif El-Din Assist. Professor of Ophthalmology Beni-Suief University Dr. Mohamed Osman Abd EL- Khalek Lecturer of Ophthalmology Beni-Suief University Faculty of Medicine Beni-Suief University 2011