Also, if the purple-blue number is greater than the purple-green number than you may have a deutan color deficiency. For example, if you get 14 out of 14 right, you have normal color vision, 1 - 5 right is severe, 6 - 10 is moderate, and 11 or 12 is mild color vision deficiency. The number of the first image in the second or third series that you cannot distinguish the gap in represents the severity of color deficiency. These determine if you have a green deficiency (deutan). The third series contains purple-green images. These determine if you have a red deficiency (protan). The second series contains purple-blue testing images. If you do, the second and third series determine which type of red-green deficiency and its severity. The first series determines if you have a red-green deficiency. The test contains three series of images. The goal of this test is to find where the gap is located in the “C shape” (known as a “Landolt Ring”) and to click on it. Only a professional in a controlled environment can provide such a diagnosis. Keep in mind that this test is not a clinical diagnosis.
The blue component of the purple disappears and becomes reddish. Yellow is seen as white and green is seen as turquoise. How people see color with tritan type of colorblindnessĪs the tritan form of colorblindness becomes more severe, a tritan colorblind person will see the following.
