[1] Tel Aviv Univ, Sch Med, Tel Aviv Sourasky Med Ctr, Neuroophthalmol Unit,Dept Ophthalmol, IL-69978 Tel Aviv, Israel
[2] Tel Aviv Univ, Sch Med, Tel Aviv Sourasky Med Ctr, Dept Neurol, IL-69978 Tel Aviv, Israel
[3] Chaim Sheba Med Ctr, Dept Neurol, IL-52621 Tel Hashomer, Israel
[4] Meir Hosp, Dept Ophthalmol, Kefar Sava, Israel