When it comes time for your comprehensive eye exam, there may be several tests your optometrist wants to perform. Most doctors perform tests that best suit their patient’s needs. As a result, not all exams include a color blindness test. This type of test is most often performed when the doctor suspects you have color vision deficiency. If you think you have color blindness, you may want to learn more about the potential test that will be done. Then Color vision test explains why you should perform a color blindness test here.