tritanopiatritanomália

Tritanomalia is a mild form of blue-yellow color vision deficiency. Individuals with tritanomaly have difficulty distinguishing between blue and green colors, and also between yellow and red colors. This condition is congenital and inherited in an autosomal recessive pattern, meaning that a person must inherit a copy of the altered gene from both parents to be affected. It is much rarer than red-green color vision deficiencies.

The underlying cause of tritanomaly is a defect in one of the three cone cell types in the retina responsible for color vision. Specifically, the cone cells that are sensitive to shorter wavelengths of light (which detect blue and yellow) are not functioning optimally. This results in a shift in the perception of colors, making blues appear greener and yellows appear redder.

Diagnosis is typically made through color vision testing, such as the Ishihara plates or a Farnsworth-Munsell 100-hue test. While there is no cure for tritanomaly, individuals can learn to adapt to their condition. In some cases, specialized tinted lenses or filters might offer slight improvements in color discrimination for specific tasks, but they do not restore normal color vision. The severity of tritanomaly can vary, with some individuals experiencing only minor difficulties while others have more pronounced challenges in perceiving certain color combinations.