Color vision and spatial contrast sensitivity in patients with risk allele for diabetic proliferative retinopathy: preliminary data - Bonci, Daniela Maria Oliveira; Ventura, Dora Selma Fix; Gualtieri, Mirella; Neitz, J; Moura, A.L. A.; Damico, F. M. (International Symposium on Vision and Visual Dysfunctions Abstracts Book, 2010)