What are the different types of color blindness?

Question

Both my nephews are color blind but im not sure which kind. I kinda remember that there are 2 types. What is color blindness like?

Answer 1

This site is pretty cool...It has a lot of information as well as a couple of images of how a person with different types of color blindness actually see something.

http://www.colorvisiontesting.com/

Answer 2

1. Total color blindness
2. Partial color blindness
a. Red-green
b. Blue-yellow

Answer 3

There are many different types of color blindness:

1. Red-Green colorblind: This is either red-weak, red-blind, green-weak or green-blind. Names are associated to either corrupt (-weak) or missing (-blind) red or green color receptors (cones) in your eyes. Some sort of this is what they probably are affected by. This is the most common one.

2. Blue-Yellow colorblind: Either blue-weak or blue-blind (blue sensitive cones). Not very often seen.

3. Monochromacy: Total color blindness, where people only can see in shades of grey. But most often those people also have problems with bright light and need to wear sunglasses all the time.

Color blindness is a bit like seeing in twilight. The type of color blindness doesn't really tell the truth: Red-green colorblind people not only have problems in distinguishing red and green colors. This is the main problem, but they have problems in all types of shades of colors. To compare: With normal vision you can distinguish about 150 different wavelengths of color, with a color vision deficiency this can drop down to 17!

Try out a color blindness online test like the one mentioned below with your nephews to find out more about it.

Answer 4

Types Of Colorblindness