1. Department of Ophthalmology, Rey Juan Carlos University Hospital, Móstoles, Madrid, Spain
2. Novovisión Clinic, Madrid, Spain
3. Rementería Clinic, Madrid, Spain
4. Óptics and Optometry Faculty, Complutense University of Madrid, Madrid, Spain
5. Department of Ophthalmology, Principe de Asturias University Hospital, Madrid, Spain
6. Medicine Faculty, Alcalá University, Alcalá de Henares, Madrid, Spain