Colour Blindness

boatone

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I would appreciate some help with discovering how many people are aware that they suffer from some form of colour blindness.
Certain occupations (navigating officers, train drivers etc)actually require you to pass a colour blindness test but for most people it appears that any specific recognition of colour blindness can be a little haphazard to say the least.
So, are you aware that you suffer from colour blindness? How did you become aware that you are colour blind? If so are you male or female and what type of colour blindness?? Have you had a formal colour blindness test?
 

gonfishing

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I have been tested for colour blindness and had no problems, unless of course thats something else that deteriorates with age!!!
 

Mike21

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Tested for colour blindness when I started work, no problems.
Why you asking /forums/images/graemlins/confused.gif



<font color="red">You got </font><font color="green">a problem? </font> /forums/images/graemlins/smile.gif
 

BarryH

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Interesting, both me and a female in the house got the top six fugures no problem. The bottom figure I saw a five straight away but could see the two and the female saw the figure five but thought the figure two was more prominant.
 

hlb

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I'm NORMAL !!!!!!!! /forums/images/graemlins/confused.gif /forums/images/graemlins/grin.gif /forums/images/graemlins/shocked.gif /forums/images/graemlins/laugh.gif
 

deborahann

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well i live with you and you are definately NOT NORMAL /forums/images/graemlins/laugh.gif /forums/images/graemlins/laugh.gif /forums/images/graemlins/laugh.gif
 

EME

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Totally Red Green Colour blind.

I did see the top left 25 on the attached test but that was it. All spots to me.

I've known it since I was 18 ( a long long time ago), does little impact on your real life unless like me you wanted to fly planes for a living !

Find it easier when you are at sea at night , you spend more time referncing angles et al.

For those who are interested , you do of course know that grass is green and you do know which traffic light is which ( apart from dark country lanes at night)
 

Gludy

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I have no problem in curing certain types of colour blindness - for example I can make anyone see red in no time.
 

boatone

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No I dont have a problem.....well, I'm not colour blind, at least !
I am very involved with the problems of ensuring that computer monitors and printers portray accurate colours and I am therefore interested in identifying how colour blindness might affect my dealings with clients, many of whom I deal with remotely.

Significant colour blindness is presumably all too apparent to the sufferer, but I wonder how many people, particularly men, might suffer to a limited degree without their knowledge. According to statistics approx 8% of caucasian males are affected but only 0.5% of females.
 

Planty

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They've changed the core colours in wiring to deal with this problem (allegedly) as colour blindness in men is so prevealnt?. Nothing to do with Europe of course !!??, For me the difference between Brown, Black, Grey, Blue is not half as evident as it used to be with Red, Yellow, Blue, Black??
 

BarryH

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Theres a 2 overlaying the 5. Or vice versa depending on how you see things. Reason you can't see it is all that dodgy home distilled hooch you lot drink up there! /forums/images/graemlins/blush.gif
 

TrueBlue

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[ QUOTE ]
They've changed the core colours in wiring to deal with this problem (allegedly) as colour blindness in men is so prevealnt?. Nothing to do with Europe of course !!??, For me the difference between Brown, Black, Grey, Blue is not half as evident as it used to be with Red, Yellow, Blue, Black??

[/ QUOTE ]

And the old scheme had some logic in it; Black implies something earthy = neutral, but the new ones as well as being drab anything other than blue seems earthy to me.

I don't like the single phase scheme either...
 

Trevethan

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Tested at schoolage 5 after insisting on painting grass brown in pictures and using purple instead of blue for the sky.
Male.

Weird thing is I find I can see the subtle colours in a shade nbot the main one. Not found it a problem.

Only problem it can cause differentiating between low intensity green and white lights.

The other issue I have is a modern fashion for printing colour on colour in websites, mags and reports.. sometimes is a bugger to read if they choose the two wrong colours.
 

ashanta

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28 Apr 2003
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There was a post on this last year which I added my knowledge of this subject.
I am Colour blind as is one in 7 males. It is passed on genetically by our Mothers who are carriers but do not physically suffer the condition themselves. I have a brother who also colourblind. I also have 2 sisters who are carriers. Fortunately they have not had any sons but they have daughters who are carriers of the defect genes.
I or my brother cannot pass on the defect gene and my children (boy and girl) are not carriers either.
This condition is commonly known as Red Green colour blindness although it results in difficulty perceiving many other colours especially when grouped together.
Females do not suffer this condition and in fact it is very rare for a female to be colour blind. If they are it is usually due to some other reason such as through an illness. (my wifes friend was colour blind until she became totally blind due to a rare eye condition) This is probably why women are more likely to choose decorative colours for the house etc.
Many men who are RG colour blind often state that there condition is only slight and it doesn't cause them much of a problem but the fact is they are RG colour blind. Thats the genetic failure of the colour cones at the back of the eyes which are deficient and there is no doubting of the facts.
If women were subjected to this condition I firmly believe that navigation lights at sea would be blue and yellow instead of red and green.(blue and yellow are the safe colours for someone suffering RG colour blindness which is why the domestic plug wiring was changed back in the seventies) Men do not talk about these issues enough and often will not accept the fact whereby women are more likely to discuss and find positve ways to deal with the matter.
Other improvements are developed in our visual ablity such as the way we configure shapes etc. We are more than likely to recognise the ship at night by the configuruation of lights than the colours. Generally the lights are distinguishable but when lights are unclear the configuration will be used.

Regards.

Peter.
 

ashanta

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As previously indicated, I am RG colour blind but I can only see the 5 and not the 2. These tests need to be carried out through a series of tests and not just one. I still failed the Lantern Test at the DOT in Liverpool and RN colour test
Regards.

Peter.
 
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