1 National Centre of Services and Research for the Prevention of Blindness and Rehabilitation of the Visually Impaired, IAPB-Italia Onlus, Largo A. Gemelli 8, Building C, 2 Floor, 00168, Rome, Italy. Electronic address: f.derossi@iapb.it.
2 National Centre of Services and Research for the Prevention of Blindness and Rehabilitation of the Visually Impaired, IAPB-Italia Onlus, Largo A. Gemelli 8, Building C, 2 Floor, 00168, Rome, Italy. Electronic address: m.guidobaldi@iapb.it.
3 National Centre of Services and Research for the Prevention of Blindness and Rehabilitation of the Visually Impaired, IAPB-Italia Onlus, Largo A. Gemelli 8, Building C, 2 Floor, 00168, Rome, Italy. Electronic address: s.turco@iapb.it.
4 National Centre of Services and Research for the Prevention of Blindness and Rehabilitation of the Visually Impaired, IAPB-Italia Onlus, Largo A. Gemelli 8, Building C, 2 Floor, 00168, Rome, Italy. Electronic address: f.amore@iapb.it.