Vision, EntopticVisual CortexEvoked Potentials, VisualRetinal VesselsVisual PerceptionOphthalmologyVisual AcuityVisual FieldsFundus OculiVisual PathwaysFovea CentralisLight CoagulationPhotographyVisual Field TestsMacula LuteaDiabetic RetinopathyPattern Recognition, VisualFluorescein AngiographyPhotic Stimulation