How to Perform an Ishihara Color Test on Your Phone

This small application for Android will allow you to perform an Ishihara Color Test. This test was developed by Dr. Shinobu Ishihara. It has been used for several years, both in hospitals and in schools.

If you have any doubts about your color vision, you should perform this test. You will need to complete the following steps:

Open this application. 

When the application starts, the colored circles appear. These circles form a larger circle with a number hidden in it. You will need to identify the number that the smaller colored circles form.