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Good
for:
Checking if you have colour blindness through a simple test
How it
works:
This app uses the common Ishihara test to identify common types of color blindness.
A detailed instruction page explains how to take the test. It consists of 17 test plates for you to view, after which you answer a question with 3 options on what you saw.
After each question, the options and their correlations to colour blindness are explained. At the end, you are shown how many questions you answered correctly and links are provided for more information on color blindness.