Rabin Cone Contrast Test
A rapid screen-based screening test for CVD. The lowest pair of letters that can be read in each of the three columns corresponds to your score. The score can then be compared to the severity guide on the right [Rabin 2011].
Since this test is just an image, it is very susceptible to distortion from compression. As a protanope using the original published version of the image, my score is 10-90-60. For certain overly compressed version that have been shared, my score has changed to 60-70-70. Note that having two scores below 80 does NOT indicate that you have two forms of CVD (Youtube),