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A metameric colour matching test was designed to study inter‐observer variability. Blue‐yellow metameric matching to a white‐light continuum was used to define the optimal wavelengths at which each of eight non‐colour‐defective observers achieved a match. The tests involved chromatic stimuli on a 2° bipartite field, with a white‐light continuum presented on the left half, and a mixture of two monochromatic...
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