Y Y Pikkel1, I Epstein2, A Nov-Sharabi3, I Beiran4, J Pikkel5. 1. Tzameret Medical Track, Hebrew University, Jerusalem, Israel. 2. Department of Ophthalmology, Ziv Medical Center, Safed, Israel. 3. Research Wing, Ziv Medical Center, Safed, Israel; Tel-Hai Academic College, Israel. 4. Department of Ophthalmology, Rambam Medical Center, Haifa, Israel. 5. Department of Ophthalmology, Ziv Medical Center, Safed, Israel; The Faculty of Medicine, Bar Ilan University, Safed, Israel.