Totally new color vision issue!


New Member
Well Doc,

Here is one out of the "blue" :laff:. I failed the color vision screening when I went to get my 3rd class medical... Never knew I had a problem until then. Anyways I went on with my life planning to take the FLANT sometime soon...

Which now brings me to the following. I interviewed for a Railroad engineer position and went through the whole process with no problems. Last was the medical. I thought I was home free then they brought out a fresh new ishihara 38plate exam. I say fresh because I was the first exam of the morning, and the doctor actually took the plastic off the book. MY heart sank as I was never told color vision would be tested. So, I braved and prepared for the inevitable, took the test and passed!! I couldn't believe it. The doctor signed off on everything. only got one wrong...number 6 which I couldn't make out in time.

Now, I was just called to take the AT-SAT exam for air traffic control. My question is can I go to an AME who has the Ishihara 38 plate test and have my blasted color restriction removed? And how could this happen... I do recall my original AME as a little flighty(i love puns) and he gave me the test in a somewhat dimly lit office. During the railroad there was ample overhead lighting. Thanks for the help Doc!


My Flight Surgeon

Sr. Aviation Medical Examiner
Take the results from the engineer test and submit them to Oklahoma City with a written request for a letter of evidence for color vision. You should get a letter of evidence back from the, in about 6 weeks.


New Member
Thanks Doc! Do you know if the Ishihara test standards for ATC are the same as those for pilots? . Ex. "no more than 9 errors on the first 21 plates of the Ishihara 38 plate edition"