what causes  tritanopia
Tritanomaly/Tritanopia. Tritan-type color blindness is characterized by a loss of color discrimination for shades of blue and yellow. This can be caused by age-related factors, genetic factors, as well as exposure to certain toxins such as mercury. A complete diagnosis of color vision deficiency is not possible using online testingâconsult an eye care professional for more information. EnChroma glasses are usually effective for red-green color blindness and are unlikely to help for tritanomaly or tritanopia (blue-yellow color blindness). However, if you would like to try EnChroma glasses, you can return them if they donât work for you.