Colorlite Tritan (blue) Color Blind Test
About the Tritan (blue) color blind test
Keep in mind that this test is not a clinical diagnosis. Only a professional in a controlled environment can provide such a diagnosis. 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.
The test contains a series of images. Based on the test results, we generate a color spectrum as you may see (and display it next to a normal one). In case of tritan type color blindness, you probably won't notice (too much) difference between the two spectrums, but people with normal color vision will see the difference. The diagnosis and the two spectrums will appear at the end. It is only for tritan type of color vision deficiency.
Sensitivity of the Tritan (blue) color blind test
The maximum score available on the test is 10. The number of errors allowed is 2, The test has a sensitivity of 84.21%, a specificity of 95.83%, a positive predictive value of 94.12%, and a negative predictive value of 88.46%. Based on my measurements, the online tritan color blind test has a lower efficiency than the original Colorlite test book (96.25%), however, this difference is still acceptable. The test detects tritan type of color blindness with adequate efficiency.
How people see color with titan type of colorblindness
As the tritan form of colorblindness becomes more severe, a tritan colorblind person will see the following. The blue colors become less vibrant. Yellow is seen as white and green is seen as turquoise. The blue component of the purple disappears and becomes reddish.
