How it Works

Many people are trying to find an opportunity to check their color vision online. Unfortunately, there aren’t many color blindness tests available on the internet. So this page shall compile a series of tests to see your color vision deficiency and its severity.

Our test, referred to as the Ishihara Test, makes numbers out of dots that are different from the dots surrounding them with a different gradient of colors.

A person with color blindness cannot see all of those dots because of the corresponding color, whereas someone with normal vision can distinguish the opposite colors. Ishihara Test, a kind of Color Blind Test, A fast and straightforward to determine whether you're struggling with blindness.

Most people will view the plates differently (mostly Arabic numbers). Those with specific sorts of color blindness will see different numbers from those not suffering from color blindness.

This is the real reason why color shouldn't be the only criteria to gives information. The perfect way to avoid color-coding or color differences is to use Good graphic design to display information. This not only helps the color blind people but is additionally helpful to the normal vision people.

How do we see color?

The human eye looks at the color by slightly stimulating the retina (the membrane inside the eye). The retina is made up of rod and cone cells.

1. Rod Cells

   Rod cells surround the retina. It helps us see at night, but it cannot differentiate between colors.

2. Cones Cells

   The cone cells are located in the center of the retina. It does not help in viewing at night but can perceive colors during the daytime. Cone cells are divided into three types -

   • L-CON cells that feel red light.

   • M-CON cells that feel green light.

   • S-CON cells that feel blue light.

Color blindness can be diagnosed. This is when the cone cells that feel color cannot send signals to the brain. It is usually either due to familial causes or by diseases of the optic nerve or retina. This problem is linked to the X-chromosome and is almost always passed from a mother to her son.

Color blindness can be caused by aging, eye problems (such as cataracts, glaucoma), eye injuries, and side effects of certain medicines. Color blindness due to family reasons lasts a lifetime. The color blindness of red-green colors is due to family reasons. This is the most common type of color blindness.

Several tests are available to measure color blindness, but the most commonly used test is the Ishihara plate test.