An effect of luminance contrast on high-spatial-frequency tritanopia.
Luminance contrast was found to affect high-spatial-frequency tritanopia despite the S-cone coordinates of the stimuli being kept constant. This proves that a traditional account of artificial tritanopias based on the spatial resolution differences between the S-cone channel and the M- and L-cone channels is not applicable here. We suggest that the lack of spatial resolution in one of the post-receptor (rather than receptor) spatio-chromatic channels could be a cause of high-spatial-frequency tritanopia.
Department of Vision Sciences, Glasgow Caledonian University, Glasgow G4 0BA, Scotland, UK.
Alexander D
AD
Logvinenko
Sara J
SJ
Hutchinson
D003117:Color Vision Defects / Q000503:physiopathology* / Q000523:psychology; D015350:Contrast Sensitivity; D006801:Humans; D008959:Models, Neurological; D008960:Models, Psychological; D009903:Optical Illusions; D010364:Pattern Recognition, Visual; D010775:Photic Stimulation / Q000379:methods; D011601:Psychophysics; D017949:Retinal Cone Photoreceptor Cells / Q000503:physiopathology*; D013028:Space Perception