A color vision test, also known as the Ishihara color test, measures your ability to tell the difference among colors. If you don’t pass this test, you may have poor color vision, or your doctor may ...

Test your eyesight without a trip to the eye doctor? Online vision tests aim to make it possible. Several companies offer tests that you can take on the internet with your computer or smartphone.

A refraction test is usually given as part of a routine eye examination. It may also be called a vision test. This test tells your eye doctor exactly what prescription you need in your glasses or ...