1. Ophthalmology Department, Soroka University Medical Center and the Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
2. Negev Environmental Health Research Institute, Ben-Gurion University of the Negev, Beer-Sheva, Israel
3. Clinical Research Center, Soroka University Medical Center and the Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel