Colour blindness test

[jaarus]

I have found a rather good online colour blindness test online (just checking ) which I thought I might share.


I didnt think I was colour blind - and I am not.
But that said, every single one of the other person in my office today varied from struggling to outright guessing on each answer as they couldnt see ANY of them!!?

My whole office is colour blind LOL - are you?


http://www.colour-blindness.com/colour-blindness-tests/ishihara-colour-test-plates/

 

[neonison]

Perfect!

Then I've been in the colour matching business for 35 years and would have had a complaint about dodgy paint before now!

Seriously, there are those who are colour blind and don't know it who cannot tell red from green.

As you all know red is at the bottom, or top if you're on the road and in the US in particular the lights are horizontal, on the road at least...

 

[DistrictDriver]

As you all know red is at the bottom, or top if you're on the road and in the US in particular the lights are horizontal, on the road at least...

Red isn't always at the bottom on the railway. Red is always closest to the drivers eye level (or so I was taught many years ago). I seem to remember one of the starters at Reading had the red aspect at the top (I think it was on one of the electric line platforms).

 

[Eagle]

I have found a rather good online colour blindness test online (just checking ) which I thought I might share.


I didnt think I was colour blind - and I am not.
But that said, every single one of the other person in my office today varied from struggling to outright guessing on each answer as they couldnt see ANY of them!!?

My whole office is colour blind LOL - are you?


http://www.colour-blindness.com/colour-blindness-tests/ishihara-colour-test-plates/

Bear in mind that doing such a test over a computer monitor is fraught with difficulties and inaccuracies. I wouldn't trust the results of this online test as far as I can throw them.

If you want to do it properly, see an optometrist.

 

[jaarus]

I agree - however did find it interesting as a guide and also that no-one here thought that they were colourblind at all - lots of, "I am not, I can see red and green" etc

 

[Flamingo]

Red isn't always at the bottom on the railway. Red is always closest to the drivers eye level (or so I was taught many years ago). I seem to remember one of the starters at Reading had the red aspect at the top (I think it was on one of the electric line platforms).

I was told it was at the bottom so that a build-up of snow on a light cover would not obscure it.

 

[455driver]

Red isn't always at the bottom on the railway. Red is always closest to the drivers eye level (or so I was taught many years ago). I seem to remember one of the starters at Reading had the red aspect at the top (I think it was on one of the electric line platforms).

I was told it was at the bottom so that a build-up of snow on a light cover would not obscure it.

Both are true except when the red is furthest from the drivers view such as Worcester Park on the down.

 

[33056]

No problem with any of these, even on this dodgy uncalibrated laptop screen; note that quite a few of the "slides" don't show any numbers, just patterns.

PS I'm definitely not colour blind, would be doing what I have been doing for the last 25 to 30 years if I was

 

[Fergie87]

I was very wrong so retracted the post.

 

[PeteH]

3/60 seems, well frankly, really bad. Any worse and one could register as blind. Not really what one wants in the driving cab.

 

[Fergie87]

Maybe I have it wrong then i'm definitely not blind going to have to go to the opticians asap.

I was miles off there is nothing wrong with my eyesight, -0.25 in 1 eye and 0 in the other. It turns out I was using the wrong chart at the 20m distance.

 

[Flamingo]

Maybe I have it wrong then i'm definitely not blind going to have to go to the opticians asap.

If they say "Do you want fries with that" you know you are in trouble

 

[PeteH]

Ahh, just had a re-read on the RNIB website, to register as blind it's 3/60 when corrected so hopefully you should be ok.

 

[jaarus]

If they say "Do you want fries with that" you know you are in trouble

Hahaha

 

[Mintona]

Red isn't always at the bottom on the railway. Red is always closest to the drivers eye level (or so I was taught many years ago). I seem to remember one of the starters at Reading had the red aspect at the top (I think it was on one of the electric line platforms).

You'll often find in tunnels that red is at the top as signals usually are on the ground, and it's is closest to the driver's eyeline.

On the approach to London Victoria (and I'm sure other places) there are signals where red is in the middle too.

 

[W230]

On the approach to London Victoria (and I'm sure other places) there are signals where red is in the middle too.

Same at Brighton, because they omit the fourth aspect (ie green) from the signal head (you're only two signals out) so they stick the red in the middle to split the yellows.

 

[p-wayman]

i'm colourblind and i hold a pts and passed my medical with flying colours. i suppose if you can get as far as i have then why not go the full way and atleast attempt it

 

[whhistle]

Transport for London is investigating new tests as the Ishihara is grossly unsuitable for the purpose it serves. A good example is that the test does not check for yellow/blue colour blindness. While this is rare, it is not impossible. The response from the RSSB has been that as yellow and blue are not as important as red and green then it is less important, which then calls into question discrimination between the two types of colour blindness.

However what the new test means is candidates who are slightly colour blind can still work in safety critical positions as their colour deficiency isn't great enough to incorrectly identify red or green.

 

[455driver]

Transport for London is investigating new tests as the Ishihara is grossly unsuitable for the purpose it serves. A good example is that the test does not check for yellow/blue colour blindness. While this is rare, it is not impossible. The response from the RSSB has been that as yellow and blue are not as important as red and green then it is less important, which then calls into question discrimination between the two types of colour blindness.

However what the new test means is candidates who are slightly colour blind can still work in safety critical positions as their colour deficiency isn't great enough to incorrectly identify red or green.

Getting red and green mixed would cause a bit of a problem, getting blue and yellow mixed up wouldnt be an issue at all!
Hardly discrimination.

 

[WSW]

Transport for London is investigating new tests as the Ishihara is grossly unsuitable for the purpose it serves. A good example is that the test does not check for yellow/blue colour blindness. While this is rare, it is not impossible. The response from the RSSB has been that as yellow and blue are not as important as red and green then it is less important, which then calls into question discrimination between the two types of colour blindness.

However what the new test means is candidates who are slightly colour blind can still work in safety critical positions as their colour deficiency isn't great enough to incorrectly identify red or green.

That's great news! Ishihara is flawed and should be phased out. Lots of people fail Ishihara but they are not colour blind and should not be rejected because of failing an Ishihara test.

Steve