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Ishihara Test for Color Blindness |
What numbers do you see revealed in the patterns of dots below ? |
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Normal Color Vision |
Red-Green Color Blind |
| LEFT | RIGHT |
| LEFT | RIGHT |
| TOP | 25 | 29 |
TOP | 25 | SPOT |
| MIDDLE | 45 | 56 |
MIDDLE | SPOT | 56 |
| BOTTOM | 6 | 8 |
BOTTOM | SPOT | SPOT |
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Another interesting color blindness test is below |
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The test to the left is simpler.
The individual with normal color vision
will see a 5 revealed in the dot pattern.
An individual with Red/Green
(the most common) color blindness
will see a 2 revealed in the dots. |
(update 19 พฤศจิกายน 2001)
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