color blindness?

Question

What causes color blindness? What is effected when a person is colorblind?

Answer 1

In the vast majority of cases, colour vision defects are of genetic origin, and are present at birth.
It is possible to acquire them through poisoning , adverse reaction to medication and certain other diseases.

The condition comes in several types and degrees of severity. Normally colour vision in the eye depends on the different stimulation of three types of light sensitive cells (cones). If one type of these is absent or abnormal, *some* colours but not all can be confused.
Most commonly red/yellow/green: "The tomato line", as a the changing tone of a ripening tomato corresponds to the poor discrimination very well.

Blue and yellow however are almost always safe colours and are not liable to be confused, even for people with very marked colour vision defects (Except for the rare "tritan" type, or the even rarer monochromats who have no colour discrimination at all)

Answer 2

Cause...a recessive gene on the X chromosome (this is why men are colorblind more often then women.
Effect..depends on the type of colorblindness, ..they see colors but have a hard time distinguish between blue and green or other color combinations.

Answer 3

The most common causes are genetic damage/errors in the X chromosome.

This effects males more often than females due to the lack of a second X chromosome. The presence of an undamaged second X in females is usually enough to prevent the disorder.

Answer 4

Most color-blindness is caused by genetics, however, sometimes, people beocme color-blind because of brain, nerve, or eye damage. Color-blindness is very hard for one to imagine, as knowone can compare "normal vision" to "color-blind vision". Everyone is different when it comes to color-blindness, however, doctors and scientists have made ways to test and level how seriously color-blind a person is. For example, my dad and I are both color-blind. I've taken many tests for it, and doctors have concluded that I am very seriously color-blind. My dad can tell some colors apart that I can not, such as neon green and white, or red and green.


If you gave me a peice of white paper with neon green writing on it, I would not be able to read the writing, all I would see would be a white paper. The most common color-blindness is red/green color-blindness. Even people who have red/green color blindness might get other colors confused, however, as red/green color-blindness is not simply limited to those colors.

Some of the most common colors that color-blind people get confused with is neon green/white, red/green, red/brown, green/brown, purple/blue and yellow/green.

Answer 5

The cells coding the color are on a particular region of retina called the fovea.

On the fovea there are two types of cells the cones and the rods

The cones allow the vision of colours

We see all the colors and hues with 3 types of cones


I give you a link for test

One is sensitve to the red

One is sensitive to the green

One is sensitive to blue

The gene coding for the cones is on sexual chromosome X

If this chromosome has a recessive mutation , you loose oene type of cones. as the mutation is recessive, only men are affected, the women having two chromosomes X

The persons who lack the red cones are called protanopes
The persons who lack the green cones are called deuteranopes
The persons who lack the blue cones are called tritanopes (very rare)

Answer 6

It is most often of genetic nature, but may also occur because of eye, nerve, or brain damage, or due to exposure to certain chemicals.

The different kinds of inherited color blindness result from partial or complete loss of function of one or more of the different cone systems. When one cone system is compromised, dichromacy results. The most frequent forms of human color blindness result from problems with either the middle or long wavelength sensitive cone systems, and involve difficulties in discriminating reds, yellows, and greens from one another.

Answer 7

where to buy colour blindness glass

Answer 8

Look it up. It's real, but probably not in the way that you think because you are asking about it. The person can still see color just certain colors are not as sharp or existent as others.

Answer 9

Red-Green colourblindness is the most common form of colourblindness. People with it can't tell the difference between red and green.

It is an X-linked genetic disorder which means that men are more likely to have it. For a woman to have it she must have a father who is colourblind and a mother who is a carrier, for a amn to have it he must have a mother who is a carrier and his cahnce of getting it is 50%, if his mother is colourblind, he will be as well.

Answer 10

colour blindeness is a hereditary disease caused due to the absence of certain cones in the retina.it cant be cured.these persons are usually not given a driving license