Peter Mojzis1, Pavel Studený2, David P Piñero3. 1. Regional Hospital, Havlickuv Brod, Czech Republic; Eye Clinic of Jessenius Faculty of Medicine, Martin, Slovakia. Electronic address: david.pinyero@ua.es. 2. Regional Hospital, Havlickuv Brod, Czech Republic. 3. University of Alicante; Foundation for the Visual Quality, Alicante, Spain.