May 28 2009
Is your child colorblind?
I was supposed to share some photos of Isabel’s birthday, but got distracted a bit on this topic…
For a long time, I was concerned whether Ian is colorblind. I convinced myself that he was only confused about the concept of color, which is common amongst young kids.
Early this week, I got a milk company’s promo booklet for Isabel. There is are 4 Ishihara colorblind test charts (like pic below). To my dismay, he couldn’t read ANY of them.


I spent some time researching this topic, and found that, many colorblinds are not really total ‘blind’ in colors. Many can still see lots of colors, but their ability to differentiate some, would be difficult.
So, last night, instead of updating post about Isabel’s birthday, we did the full test of the 24 Ishihara discs. The result was quite confusing. Ian could read about 3, but not able to read the rest.
Here is his test result:
1. 12 (anyone can do that, it is control disc)
2. 3
3. 29
4. Nothing (only dots)
5. Nothing
6. Nothing
7. Nothing
8. Nothing
9. Nothing
10. Nothing
11. Nothing
12. Nothing
13. Nothing
14. Nothing
15. Nothing
16. 6
17. 2
18. 1 line – purple line only
19. Nothing
20. Nothing
21. Nothing
22. Line tracing the blue-green dots, but not the yellow-green dots.
23. Line travcing the purple dots, but not the orange dots.
24. Got it (anyone can do – control cell)
I am only hopeful that the test is not conclusive because we used a computer, and the monitor screen may have altered the appearance of shades of color.
I think I have also scared him with the tests, although I keep telling him that we are playing a ‘treasure hunt’ game, trying to find numbers in the dots. So, I will park this issue aside, but will discuss with our doctor. Maybe when he is slightly older, I will bring him to a specialist.
Here are some interesting and useful sites that I came across on this topic:
1. Colblindor
This site’s owner, I think, is also a colorblind, that’s why he offers some very interesting insights.
He also provides a colorblind simulator. It helps us to understand the world of a colorblind. Example, in a Red-Weak/Protanomaly case, photo on the left will look like the right below:

2. Ishihara set of 24 colorblind test charts
This is what I used last night. There are many methods, but this one is widely used. There is instruction too on this page.
3. New Pediatric Color Vision Test
This one is specially designed for kids 3-6 years old. Something similar to the Ishihara discs, but they use shapes instead of numbers, claimed to be 100% accurate. But the website only offer a glimpse into the first 3 slides. The rest need to be purchased. Ian could read all the 3, but the result is not conclusive unless the whole set is used.
Whatever it is, we are advised to see a specialist instead of doing own testings, if we suspect our kids have colorblind. I will do that, but not now. Let Ian forget about this first. I don’t want this to be a bad experience for him. Even if he is colorblind, I don’t want him to feel handicap. He is smart, he is joyful, he is active… and he is proud of himself. He is also very kiasu. I can’t imagine if he knows there is something he cannot do… how upset could he be.
Pray God that the tests are not conclusive. Pray God that the tests are not accurate!!!








