People with color disorder find it hard to recognize the color, specially at the time of specific disorders. There are four types of color disorders like Deuteranomalia, Protanopia, Tritanopia and the most worst Monochromacy.

Deuteranomalia is the type of color disorder in which the retina do not respond to the 'green color'. This disorder specifically relates to the green color but some time it may also affect the 'red' color vision.

Vision disorder Protanopia refers the disorder in which, one find difficulty in differentiating the red and green color, and also, in blue and green colors.

Tritanopia is very rarely occurring vision defect, it creates the environment in which a person can only see the nature with greenish-pink tone.

Monochromacy is the total color blindness, this disorder is also very rare kind occurring defect, people with Monochromacy defect will see the whole environment in black and white color.

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The pictures on the above slides will show you the vision of people with color blindness.