[1] Univ Hosp Lozano Blesa, Ophthalmol, Zaragoza, Spain
[2] IIS Aragon, Zaragoza, Spain
[3] Univ Zaragoza, Sch Med, Dept Physiol, Zaragoza, Spain
[4] Univ Zaragoza, Sch Med, Dept Surg, Zaragoza, Spain
[5] Univ Zaragoza, Dept Appl Phys, Zaragoza, Spain
[6] Univ Alicante, Dept Physiol Genet & Microbiol, E-03080 Alicante, Spain
[7] Hosp Unviersitario Miguel Servet, Ophthalmol, Zaragoza, Spain