[1] Presidio Osped Oftalm, Neuroophthalmol Unit, Piazzale Eroi 11, I-00136 Rome, Italy
[2] Presidio Osped San Filippo Neri, Multiple Sclerosis Ctr, Rome, Italy
[3] Univ Cattolica Sacro Cuore Sch Med, Rome, Italy
[4] Presidio Osped San Filippo Neri, Neurol Unit, Rome, Italy