1. National Centre of Services and Research for the Prevention of Blindness and Rehabilitation of Low Vision Patients International Agency for Prevention of Blindness‐IAPB Italia Onlus Fondazione Policlinico Universitario "Agostino Gemelli" IRCCS Rome Italy
2. Department of Ophthalmology Universita' Cattolica del Sacro Cuore, Fondazione Policlinico Universitario "Agostino Gemelli" IRCCS Rome Italy
3. Donald K Johnson Eye Institute Krembil Research InstituteUniversity Health Network Toronto ON Canada