My youngest is green colour blind.....and it was funny as the older and younger read the charts and realized what the one could see and the other could not.

I had one done at the doctor's when I was young.  I do remember doing it in a class later too, there was one person who was colour blind and everyone thought it was funny when he started shouting different numbers.

Eight out of one hundred males are color blind, and four out of one thousand females are. The most common colour deficiency is red/ green, with the green receptors not working most often. Khaki green and orange-red colours look the same. Monochromats are rare. Traffic lights have blue in them so that the colours can be differentiated. Colour blindness precludes one from being a police officer or a fireman, which has sent more than one young man to tears. It is fascinating though that we take the things we see and the way we see them for granted and perceive it all as normal.....even when it is not.

My dad is colour blind. I'm pretty sure it's green colour blind if I remember correctly. I took the test and passed all of them. A few were trick questions! I thought I was colour blind until I read that if I don't have any colour blindness I shouldn't be able to see any numbers!

Thanks Pinga, that was fun!

My mother and brother are both colour blind.  From making comparisons of what we see, I've been able to pick out the numbers the colourblind see in those tests as well.  One thing I find really interesting is that my brother never sees the bright fall colours.  I thought that was sad until he told me that he DID see oranges in late August.  I can now see which trees he means on my own; they have a very subtle change to a more yellow green before the full colour change.  

Yes, if you click on the buttons you can see where they see something that you do not. Quite fascinating.

My father is colour blind.  My youngest is.  The gene came down through my line.

There are a few jobs which you cannot have in the armed forces due to colour blindness, including being a pilot

Baylacey -- agreed, I think that tests like this one help us to understand our own blindness to other things.....for if the basics of colour can be so different due to sight, what about other things -- sounds, touch, emotions, 

i've had fun with these -- my dad, since he was a psychiatrist and since he loves books, had these wonderful medical books with colour images on acetate so that i could see kinda in '3d' the various body's systems...there was this other book he had that had these kind of glasses that would make me 'colour blind' for some of the above tests...lots of fun :3

I am marginally colour blind. When I did my enlistment physical for the Canadian Forces, I was told that I would not be allowed to play with tthings that went "boom".

I just had my eyes checked a ta new optomistrist including the colour vision and steronosis-depth percetion.

No colour blindness!