Tritan | color-deficiency

Tritan Color Deficiency

Tritan color deficiency can be broken up into two types:

Tritanopia

Tritanomaly

(Grais, n.d.)

Tritanopia

Tritanopia is often referred to as blue-yellow color blindness. It is characterized by missing cones sensitive to short wavelengths (Fluck, 2014). This means individuals with tritanopia only have functioning red and green cones. With this deficiency, they perceive short wavelength light as blue, long wavelengths as red, and have a neutral point at 570nm (Goldstein, 2010). Tritanopia is an extremely rare type of color deficiency. It affects 0.002 percent of men and 0.001 percent of women. Tritanopia can be either acquired or inherited. It can be acquired from aging or from a blow to the head. Unlike protanopia and deuteranopia, tritanopia is not a sex linked deficiency. Rather, it is a mutation of a gene (Right Diagnosis, 2015).

Tritanomaly

Tritanomaly does not have missing cones, however, the cones sensitive to short wavelengths are dysfunctional. As a result, individuals with tritanomaly have color deficiency anywhere between normal color vision and tritanopia (Fluck, 2014). It affects roughly 0.0001 percent of men and women (Right Diagnosis, 2015).