Establishing the Statistical Limits of “normal” Chromatic Sensitivity
نویسندگان
چکیده
Measurement of colour discrimination loss is particularly important in demanding visual tasks where colour is used to enhance visual performance. Ideally, colour vision assessment requires a test that (I). provides true isolation of colour signals, (II). is based on data that describe the statistical limits of colour discrimination in “normal” trichromats, (III). has enough sensitivity to detect “minimal” deficiencies and to classify them, and (IV). can be used to detect and monitor “significant changes” in colour sensitivity. We describe a new Colour Assessment and Diagnosis (CAD) test that exploits the CIE-(x,y) 1931 system and extends the work of MacAdam(6) using spatiotemporal luminance contrast masking techniques(4; 5). The CAD test has been optimised to fulfil the requirements stated above.
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