deuteranomaly

physiology

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July 22, 2026

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Deuteranomaly is a physiological condition characterized by a partial loss of green color vision. Individuals with deuteranomaly require a greater intensity of green light in a red-green mixture to match a specific yellow hue. This condition is a type of color blindness, where the green cones in the retina are functionally limited, leading to reduced sensitivity to green light. It is an anomalous trichromatic condition, meaning all three cone types are present but one is not functioning optimally. Deuteranomaly is typically inherited and is more common in males due to its X-linked recessive nature.12

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colour blindness
Types of colour blindness
In deuteranomaly, in which sensitivity to green is reduced, the green cones are functionally limited. Two forms of blue-yellow colour blindness are known: tritanopia (blindness to blue, usually with the inability to distinguish between blue and yellow), which occurs when blue cones are absent; and tritanomaly…
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In deuteranomaly, in which sensitivity to green is reduced, the green cones are functionally limited. Two forms of blue-yellow colour blindness are known: tritanopia (blindness to blue, usually with the inability to distinguish between blue and yellow), which occurs when blue cones are absent; and tritanomaly…
Read More