Take this very fun test and if you can’t see something, maybe you are color-blind. I strongly recommend you to take this test.
Color blindness or color vision deficiency is the inability or decreased ability to see color, or perceive color differences, under normal lighting conditions. Color blindness affects a significant percentage of the population.
You will never know whether your eye is normal until you take this test. It definitely base on scientist research.
This application supports you, your family and friends to know how strong your eyes are.