[1] Villa Igea Hosp, Dept Ophthalmol, I-47122 Forli, Italy
[2] Ist Int Ric & Formaz Oftalmol IRFO, Forli, Italy
[3] Rabin Med Ctr, Dept Ophthalmol, Petah Tiqwa, Israel
[4] Tel Aviv Univ, Sackler Fac Med, IL-69978 Tel Aviv, Israel
[5] Univ Alexandria, Alexandria, Egypt