1. From the Hospital Clínico Universitario San Carlos, Instituto de Investigaciones Ramón Castroviejo, Madrid, Spain;
2. From the Hospital Clínico Universitario San Carlos, Instituto de Investigaciones Ramón Castroviejo, Madrid, Spain; the 2Cooperative Research Network on Age-Related Ocular Pathology, Visual and Life Quality, Instituto de Salud Carlos III, Madrid, Spain; an
3. the Miguel Servet, University Hospital, Saragossa, Spain.