What and how do colorblinders see the world without color

Color blindness is a characteristic of vision, which happens in a person from birth or due to some kind of nervous or eye diseases. If the disease is congenital, it is not possible to heal it. Color blindness due to diseases can be observed in one eye or immediately in both. In the case of the acquired disease in curing the underlying pathology, the person's vision becomes normal and a similar defect disappears. It is thanks to such people that we can most clearly understand how color blindness is seen, and how much their perception of this world is distorted. Because of the characteristics of genetics, congenital color blindness affects, as a rule, men. Daltonian women meet twenty times less often. By the way, it is worth noting that until recently, doctors were confident that among women such a disease did not become widespread. Nevertheless, occasionally ladies lose the ability to distinguish colors. This happens with age, or in consequence of a serious injury.

To find out how colorblinds are seen, one should bear in mind that most of them do not distinguish only one color - blue, green or red, but some do not immediately see two colors (pair blindness) or do not recognize all colors at all (color blindness).

Problems in the work of color-sensitive receptors in the main part of the retina are the cause of imperfect color perception. Special nerve cells (cones) play the role of receptors. There are cones of three types, which affect how they see color-blind. Any of these species contains a color-sensitive protein pigment, which is responsible for the perception of one primary color. In people with congenital color blindness, there is no process of producing these color-sensitive pigments (one, two or all three at once).

To reveal color imbalance, polychromatic test tables are used, in which figures or simple figures are drawn with colored circles. With that anomaly, as colorblinders see, they can not see these figures or figures. A person with normal vision can see the image immediately.

Medicamental treatment of congenital color blindness is absent and until recently there was no method to cope with the disease. In 2009, a team of American scientists made an attempt to solve the problem of color blindness with the help of genetic engineering. Through the introduction of genes, monkeys managed to solve the problem of color disturbance and prove that there is no need to change the nervous system in order to perceive new colors.

There are also some methods for changing color perception with the help of special lenses. Not so long ago, glasses were developed for color-blinds with lenses of lilac color for correction of color blindness. Thanks to the points, you can distinguish between green and red colors, which improves the color vision of people who have a common form of color blindness. Tinted, red-tinted contact lenses that can be used to pass certain tests can also significantly improve color perception, but they can not be used for permanent wearing.