Colour Vision Deficiencies IX pp 441-445 | Cite as
Loss of Color Opponency and Concomitant Changes in FM-100 Hue Test in a Case of Cone-Rod Dystrophy
Abstract
Spectral sensitivity curves on a white background and F-M 100-hue test results were collected from each eye of an individual with cone-rod dystrophy. Comparing the findings for each eye revealed a striking difference between the color vision of the two eyes. For the eye with the ‘best’ acuity (0.66), results from the F-M 100 -hue test were essentially normal and the spectral sensitivity curve, while showing decreased sensitivity across the chromatic spectrum, still demonstrated the color-opponent dip found in normals. On the other hand the eye with the ‘worst’ acuity (0.4) displayed an abnormally high error score (412) with a scotopic axis on the F-M 100-hue test and the spectral sensitivity curve from this eye lacked the color-opponent ‘dip’ found in normal trichromats.
Keywords
Visual Acuity Color Vision Error Score Test Flash Vision DeficiencyPreview
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