Color+Blindness

=Color Blindness=

Color blindness comes in many types, that can be very different. Here is a picture of the rainbow as viewed by a normal person without any color blindness:

Here is how it would look to people with various color blindness disorders: Protanopia

Deuteranopia

Tritanopia

There are also many tests to see if you have color blindness disorders:

Someone who is Protanopic might not be able to see the 37 in this image.

Someone who is Deuteranopic might not be able to see the 44 in this image.

Someone who is Tritanopic might not be able to see the 56 in this image.

To people who are not color blind, the 74 in this image should show up clearly visible. To those with Dichromacy or Trichromacy it may show up as a number such as 21. Those with achromatopsia may not be able to see anything at all in this image.

A common misconception about color blindness is that it causes colors to COMPLETELY change, or go away. Really, it just dulls the colors, or makes them more similar. The top row of images are what an apple would look like to those of us without any color blindness. The bottom two images are what the same apple might look like to someone who is color blind.

Color blindness is much more common in males than it is in females. This is because it is caused by a defect in the X chromosome. Since girls have two X chromosomes, it is less likely that they will have it in both X's. However, women who have the defect in one X chromosome are still carriers, so they can pass it on to their children. Color blindness was the first genetic disease to be found as a trait linked to a specific chromosome.

A small percentage of people in the world today are color blind. Approximately 5-8% of males are color blind, and 0.5% of women are color blind. People who have troubles seeing red or green make up about 99% of those people.