Color Blindness Testing Poster for Children
- Posted by Daniel Flück on May 6th, 2006 filed in Tests
Mike McLane’s son is colorblind but they didn’t really found out about it until his son was in the 4th grade. By knowing about his deficiency only afterwards teachers could support him and so Mike’s son didn’t receive bad test results anymore just because of his red-green color blindness.
That is why Mike created a Color Blindness Testing Poster. It can be used as an initial screening. Only if a child can not see the numbers and signs on it a doctor should be consulted for proper testing. The poster works very well with children of age 5 or 6 years, as Mike writes on his web site.
As for my person I just feel like a blind man when I look at all the dots. Only at the bottom to the left and right side I can see some lines and that’s about it. Nothing else! Well, if I look very close I can see some numbers. Somewhere I spotted the number 99 until my wife corrected me — it is the number 79.
There are approximately 8% of men affected by color blindness. As a conclusion there is about in every school class a child which has some kind of color vision deficiency and usually this isn’t recognized immediately. But if the teacher and the child would know about it there learning experience could be improved a lot.
Color blindness is frustrating not only for the affected child but also for teachers. It can lead to unexplainable test results, completely wrong answers and misunderstandings. If color blindness is understood a teacher can support affected children by choosing correct colors, supporting colors with signs and be a helping hand if colors are the source of understanding for example in biology classes.
Arlene Evans found out about this lack of information when she was working as a school teacher. That’s why she wrote a book on color vision deficiency for children to explain this phenomenon in simple words and pictures. She also gives some hints and tipps for everyday life. The book is not only a good source of information for children but also for teachers and helps to better understand color blindness and how you can support children affected by this deficiency.
Dear teachers, please learn more about color blindness, try to understand it, be aware of it whenever colors are involved or even buy one of this posters. You are confronted with color blindness every day — even if you don’t know about it yet.
Related articles:
Arlene Evans Books about Color Blindness
Colorblind Population
Color Blindness Test by Dr Shinobu Ishihara
Direct link to the Color Blindness Testing Poster web site.


May 10th, 2006 at 0:27
I cant see anything from there…Are u serious there are others who can read numbers from this?
May 10th, 2006 at 9:33
Yes I am; it is unbelievable to me as well but my wife says she can clearly see all thos numbers and signs.
You can load the picture into photoshop and play around with color channels or hue filters. Sometimes then the hidden stuff appears even to my colorblind eyes.
June 11th, 2006 at 1:23
[…] Daniel, from the Colblindor Blog gave me good advice on children color blindness when I asked him about my 3 years old boy changing yellow and green colors. […]
January 18th, 2007 at 18:23
ha I am color blind So you are not cool you have to be color blind to be cool!
February 6th, 2007 at 6:07
I was checking to see if my 3 year old daughter might be colorblind and to my horror I cannot make out anything on this image!!
February 6th, 2007 at 6:21
Well I hate to say it but I can’t see a single thing out of that. Lucky for me all of my brothers can’t either so atleast I wont get picked on. Why does it have to be a kid drawing though? Doesn’t make me feel any better…..
February 6th, 2007 at 14:03
Actually it’s not only for kids, but easier for them to talk about balloons and houses than just simple numbers or relating colors to each other.
Funnily enough it sometimes takes a long time to find out if you are colorblind yourself.
February 24th, 2007 at 21:55
I discovered I have some sort of colour blindness having made a mega error buying something. Having tried the tests on line I asked for a screening- not possible- waste of money can’t do anything- so I am just routing around the internet trying to find out in what areas my problem lies- I can’t see the poster either!
October 28th, 2007 at 23:11
just becuase you cant see anything in that image doesnt mean your colorblind…unlike any of you im actually colorblind.
November 7th, 2007 at 6:21
I must not be color blind because I can see all of the numbers, a tree, a person flying a kite, an airplane, a car, a little house/shed, and the sun. Can’t wait to have my husband and two young boys look at it though. Hopefully they can see everything that I did.
January 6th, 2008 at 22:54
these tests are silly, i can’t see the images at all, but colourblindness does not affect any part of my everyday life. I want to join the fire brigade, will these tests affect my chances?