CS function is impaired in patients with STGD at distinct spatial-temporal frequencies, which, in addition to the color vision deficits, suggests dual impairment of the magno- parvocellular pathways. STGD morphologically unaffected carriers may show patterns of psychophysical dysfunction that are mirrored by abnormal mfERG responses.
Novel topographic achromatic and chromatic CS methods can detect and quantify functional impairment in early stages of BMD, including the involvement of the peripheral retina and the central chromatic pathway, and can provide new pathophysiological information with added value in relation to electrophysiological and structural measures of damage.
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