Color blindness is not a singular condition. It encompasses a range of conditions, from mild to severe, that can cause each person to see color differently. EnChroma glasses are designed to improve color vision of people with forms of anomalous trichromacy, which are estimated to comprise four out of five cases of color blindness. The most common types are Protanomaly and Deuteranomaly, which are forms of partial red-green color blindness. In the most extreme cases, the complete absence of one of the cone photopigments, called Protanopia or Deuteranopia, are considered dichromats who may see limited results due to the complete inability to see red and green color differences. Reduced color discrimination of shades of blue and yellow is called Tritanomaly, or Tritanopia which is not a type of what is commonly referred to as red-green color blindness, but is also a form of color vision deficiency. EnChroma glasses are designed to address forms of red-green color blindness and are not intended to assist the vision of people with Tritan-type deficiency. Fortunately, most cases of color blindness respond well to EnChroma spectral lens technology, enabling the perception of bright, vibrant color. Learn more about types of color blindness.