Monica Alves1, Rosalia Antunes Forschini2, Paulo Schor3. 1. Department of Ophthalmology and Otorhinolaryngology, Faculty of Medical Sciences. Universidade Estadual de Campinas, Campinas, SP, Brazil. 2. Department of Ophthalmology, Otorhinolaryngology and Head and Neck Surgery, Faculdade de Medicina, Universidade de São Paulo, Ribeirão Preto, SP, Brazil. 3. Department of Ophthalmology, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, SP, Brazil.