Dichromacy (from Greek di, meaning "two" and chromo, meaning "color") is the state of having two types of functioning photoreceptors, called cone cells...

isoluminant to the standard observer may not be isoluminant to a person with dichromacy. Cole describes four color tasks, all of which are impeded to some degree...

have partial color vision. The most common form of dichromacy is red-green colorblindness. Dichromacy usually arises when one of the three opsin genes is...

both active). Most studies of carnivores, as of other mammals, reveal dichromacy; examples include the domestic dog, the ferret, and the spotted hyena...

are functional, but one or more is altered in its spectral sensitivity. Dichromacy, when one of the cones is non-functional and one of the red-green or blue-yellow...

indistinguishable from dichromacy (strong). Therefore, the differential diagnosis between anomalous trichromacy and dichromacy is difficult. An example...

ancestor of mammals lost two of its four kinds of cone cell, evolving dichromacy, a loss ascribed to the conjectured nocturnal bottleneck. Some primates...

perception Chromesthesia Sonochromatism Color blindness Achromatopsia Dichromacy Color calibration Color constancy Color task Color code Color temperature...

trichromacy), moderate, lacking an entire dimension or channel of color (e.g. dichromacy), or complete, lacking all color perception (i.e. monochromacy). Most...

X-linked recessive myopia, astigmatism, impaired visual acuity and red-green dichromacy. Cone dystrophy - a degenerative loss of cone cells Retinoblastoma - a...