Color Blindness

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But all this color's symbolism (Roloc's Msilobmys) are worthless when you cannot see the color of a particular thing. People’s visual deficiency in perceiving colors around them is called color blindness.  There are two main types of color blindness namely red and green defect and the yellow and blue blindness.

Red and Green Defect

It is something wherein someone has a great deficiency in things that are red and green in color. For them, red and green only differ in terms of their brightness. They didn’t even recognize their related colors such as orange, blue-green and violet. What they can only see is that the world is shaded with yellow, blue and gray.

In spite that, they still use the terms red and green like red berries and green vegetables. But then for them, they are just merely names and so are not perceptions of color.

According to the studies, it is being inherited and usually males are the victims of it because they have this X-chromosomes which may have a color-defect gene. Once there is, surely he will have color-vision defect. Unlike with the females, they have two X-chromosomes and both should carry the color-vision defect gene because if it only takes one, then it would be unlikely to happen.

Yellow and Blue Blindness

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Compared to red and green defects, yellow and blue blindness is rare; has dichromatic color vision and could see only two neutral or colorless in the spectrum. They could see the world shaded only by red and green also black, white and gray.

This kind of vision defect can be acquired when a person has a complication in his retina like having a cataract or sometimes it is due to hereditary condition.

The Most Severe

It is a rare type of color vision defect but it is the most severe one—the monochromatism. It has two forms, the typical and atypical.

The one with typical monochromatism has very poor visual ability because his eyes are very sensitive to light. Unlike with the atypical form of monochromatism, the person is still have a normal visualization only that he suffers loss of color vision. He can only see things in black, white and gray.

So generally, monochromatic deficiency can also be inherited but unfortunately scientists can’t identify yet what genetics are involved.

The Significance of Colors

Ø  Without colors, everything will seem to be lifeless.

Ø  Colors make our environment more interesting and attractive.

Ø  Gives pleasure and refreshment in our eyes.

Ø  It is useful not just to us but also to the animals because they use it disguise against their enemies.

Ø  Indicates dress coding upon applying for jobs, attending an event, etc.

Ø  Essential in art, crafts, decorating, clothing, photography, printing and many other things in the business and industry.

Ø  Essential in technology such as for traffic signs and color coding for electronic wirings.

Ø  Identifies a dangerous and non-dangerous animal. For example, brown frogs are harmless while those in red or even green are poisonous.

Ø  Identifies different kinds of medicines for specific usage.

Ø  Identifies the living from the dead.

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Someone have said that the “ability to see color is not necessary for human survival.” In some point of view, he may be right in saying so but for me, it is important. It is because the color of the thing matters for its easy, clearer identification as we encounter new discoveries of life.

REFERENCES 

·         Encyclopedia Americana (C)

·         The New Book of Knowledge