Color Blindness

Simone Halpin and Jessica Li

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       Colors are a part of everyday life. Whether you are picking out an outfit, or shopping for your all-greens diet, color can influence you in many ways. It can “sway thinking, change actions and cause reactions. It can irritate or soothe your eyes, raise your blood pressure or suppress your appetite” ( But some people do not see color the way others do. Color blindness is a genetic condition where someone cannot distinguish between certain colors. This usually happens with reds, greens, yellows, and at times, blues. In this article, learn about how colorblind people see the world, and why they do so.


Color Blindness Genetics


As mentioned, color blindness is a genetic condition, which means (people that have it) are born with it. The retina in the eye has two types of cells that detect light, and they are called rods and cones. While rods only detect lightness and darkness, cones are the ones that detect color. There are three major cone cells in the eye, and color blindness happens when they are missing or not working right. When they are missing, it is classified as severe color blindness. When just one of them is not working right it is classified as mild color blindness and can result in not detecting specific colors correctly. The most common type of color blindness is the red-green blindness, and generally affects males. This is because the gene for color blindness is found in the X chromosome, and since males only have one and females have two, it is more likely to affect the male.


Color Blindness Correction

Although there is no cure for color blindness yet, it can be corrected temporarily with special sunglasses, or glasses.

One type of these special glasses is made by EnChroma. These glasses use lenses that are specifically manufactured to oppose the causes of color blindness. Another type is the Color Correction System. These glasses use filters in their lenses to change the wavelength of colors, changing the color brightness. This company also manufactures contact lenses that have these filters.

These glasses help with many jobs. For example, firefighters and military personnel need to be able to distinguish colors as a safety precaution.



Now that you know the basics of color blindness, you can see how some people with color blindness see the world.

Example one:


This is an example of the red-green color blindness, and the red and green apples appear yellow and/or brown.

Example two:


This is an example of how a person with tritanopia color blindness would see colors. Tritanopia is when your
blue cone cells are deficient.


Example three:

This is an example of how a person with Deuteranopia color blindness would see a stop light. Deuteranopia is when your green cone cells are deficient.

Below is a link where you can go to take a color blind test and test out your color eyesight.



       With all your knowledge on color blindness, you may now understand how color blind people see the world. better. You can also take the test to see what kind of vision you have. Hopefully after reading this article, you will tell other people about color blindness, and maybe they will be interested in it too.