The Ishihara test is one of the most common color blind tests worldwide. Ishihara test mainly detects red-green colorblindness. The test consists of 38 Ishihara plates which are colored plates that contain dots of different sizes and colors. The dots are arranged in numbers or shape patterns that can't be seen by people with a red-green type of color blindness.

https://colorblindtest.us/ishihara-tes...

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