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  • Title: Large-field trichromacy in protanopes and deuteranopes.
    Author: Smith VC, Pokorny J.
    Journal: J Opt Soc Am; 1977 Feb; 67(2):213-20. PubMed ID: 300100.
    Abstract:
    Protanopes and deuteranopes do not accept the classical dichromatic matches when field size extends to 8 degrees visual angle. Their unique matches of spectral yellow to a mixture of red and green are then mediated by the photoreceptors of small-field dichromacy interacting with a photoreceptor with the spectral sensitivity of rhodopsin. Our data suggest that large-field trichromacy is a general feature of protanopia and deuteranopia.
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