I've taken this at 3 different locations and the numbers have all been the same.

I would have to say the OPTEC 2000 has been the easiest test thus far. There is a good downloadable version that holds up very well to the real thing. 0 is perfect discrimination and 20-50 is normal/average.

This test tells you pretty much exactly where you stand with your deficiency and gives you a total error score in relation to 'normal' population. I would think the best test the FAA should accept is the farnsworth munsell 100 hue test. When shown for the first time I tensed up thinking 'these are tough to see in 3 seconds!' It wasn't til after buying the book and for lack of a better word, starring at them for a few days that it became easier. I myself can pass the 38plate test with no errors after studying it. There have been numerous stories of Japanese men memorizing patterns and or shapes on these tests. In Japan a few decades ago it was considered shameful to have a genetic defect such as color anomaly. But they are not perfect and classify people in one group. But, the pseudochromatic tests are quick and inexpensive to administer. these are the people who cannot decipher green from red. The truth is I believe these exams were designed to screen out those who are dichromats or monochromatic. Most people who fail a color vision exam are branded colorblind, not fair. The term 'colorblind' has created somewhat of a bias when it comes to color deficiency.

I would say that it is safe to say that all anomalous trichromats can find a test they can pass. From all my experience with color vision I've come to a few conclusions(I've taken every color vision exam except the titmus.)

Aoc hrr 2nd edition test