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A person who is color blind does not necessarily only see the world as black and white. Some people may not be able to distinguish purple and blue shades, or see yellow as green, while others have difficulty distinguishing between red and black. So, if people who are color blind can be completely cured?

How does a color-blind person look at the colors of an object?
Whenever the eye sees an object, such as a banana, the light from the surrounding environment will be reflected off the surface of the banana and then captured by the retina at the back of the eye. The wavelength of light reflected on the object determines what color you see, yellow banana.

Well, the retinal layer has two kinds of cells to capture light, that is, stem cells and cone cells. Stem cells are very sensitive to light which is very useful to adapt in dim room, whereas conical cells have better viewing accuracy and have useful fotopigmen to distinguish colors.

The cone cell has 3 kinds of fotopigmen useful to distinguish 3 basic colors, namely red, blue, and green. Colors other than the three basic colors are a combination of the three basic colors, such as the yellow color which is a combination of red and green.

So, what happens to the eyes of people who are color blind? Color blindness results from the limitation or loss of the function of the cone cell. If the red (protan) or green (deutran) photopigm does not work, you will have trouble distinguishing red and green shades. The colors red, orange, and yellow look greener even brown or black. Can also see the color green and yellow look more red, or difficult to distinguish between purple and blue.


In some people, all the photopigms in their cone cells can not function at all, so they can not see any color. The world really looks as black, white, and gray,

Is color blindness healed, in order to re-see the colors of the world?
Color blindness is generally caused by genetic disorders inherited from parents. Reported by Everyday Health, so far no treatment or medical procedures that make color blindness can be completely cured. A group of researchers recently designed a gene therapy that was proven to cure color blindness on monkeys that can not distinguish between green and red. But until now, gene therapy has not been inaugurated and has not been declared safe to treat color blindness in humans.

Color blindness is not harmful. Most people who are color blind can adapt to their conditions and show work productivity that is equivalent to those with normal vision, or even better.

A team of US army researchers found that color blind people can see better color camouflage, when people with normal color vision can be deceived by it. In fact, the decrease in color vision can make them more able to distinguish the texture and brightness of an object.

Moreover, there is a tool for view in the form of spectacles or special contact lenses to help blind red-green patients, the most common type of color blindness. This tool does not make the color blind get rid of the total, but the color that was not clear enough to look more "lit up".

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