HRR Pseudoisochromatic Plates 4th Edition World’s Most Advanced Color Plate Test The HRR (Hardy Rand and Rittler) 4th Edition has three very important features that provide the most advanced color vision test available: congenital and acquired testing, identification of the type of defect and diagnosis of the extent of. It is reported that the AOC and the Dvorine tests are the easiest to accomplish for people with color vision deficiency. AOC (1965 edition) AOC-HRR (second edition) Dvorine pseudoisochromatic plates (second edition, 15 plates) Ishihara pseudoisochromatic plates (concise 14-plate edition, 24-plate edition, 38-plate edition).

From all my experience with color vision I've come to a few conclusions(I've taken every color vision exam except the titmus.) I would say that it is safe to say that all anomalous trichromats can find a test they can pass. The term 'colorblind' has created somewhat of a bias when it comes to color deficiency. Most people who fail a color vision exam are branded colorblind, not fair. The truth is I believe these exams were designed to screen out those who are dichromats or monochromatic. These are the people who cannot decipher green from red. But, the pseudochromatic tests are quick and inexpensive to administer.

But they are not perfect and classify people in one group. In Japan a few decades ago it was considered shameful to have a genetic defect such as color anomaly. There have been numerous stories of Japanese men memorizing patterns and or shapes on these tests. So, like a said they aren't fool proof.

I myself can pass the 38plate test with no errors after studying it. Granted I can see about 50% flat out.

Indeed, studies that compare the actual outcomes of capital-investment projects, mergers and acquisitions, and market entries with managers’ original expectations for those ventures show a strong tendency toward overoptimism. Executives and entrepreneurs seem to be highly susceptible to this bias.

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 would think the best test the FAA should accept is the farnsworth munsell 100 hue test. 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 scored a 61 last time a took it. 0 is perfect discrimination and 20-50 is normal/average. There is a good downloadable version that holds up very well to the real thing.

I would have to say the OPTEC 2000 has been the easiest test thus far. It is 6 ishihara like plates. I've taken this at 3 different locations and the numbers have all been the same. Not saying I memorized it. I can see all of them pretty easily except the 6 where I have to look a little closer. But it seems the numbers jump out more than in the book.

Hopefully we'll have a good discussion on this and i'll think of some more good info. I was purely making the point that for some time I was convinced I was colorblind. It wasn't until I spent a considerable amount of time researching this that I came to understand my deficiency was tantamount to the color vision of many males in the normal population. I was given an ishihara test for another transportation job. I was not to concerned as if you failed the ishihara they gave you the optec 900 which I had previously passed. To my somewhat surprise I passed the ishihara 38 plate with only 2 errors. I've also passed the farnsworth lantern the first time at the optometry college.

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