Daltonism


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Daltonism, also known as the so-called “color blindness” is not a real blindness, but the problem associated with the lack of vision of some colors. This interesting problem with the view is related to the difficulty of highlighting some colors, mostly blue and yellow or red and green.

Daltonism is most often a condition of eye health that is an inherited defect and, interestingly, in the vast majority of cases, it affects mainly men, much less frequently women. The most common form of color blindness is that associated with blindness on the green and red. Fewer cases of hereditary blindness are associated with a reduced ability to see blue and yellow colors (this type, in turn, affects men and women equally).

Symptoms of Daltonism

The difficulty in distinguishing colors like blue and yellow or red and green is the first symptom of the problem. Color vision in people with color blindness does not affect their vision, as most of the color visionaries see color, but their perception is limited or inaccurate. Therefore, if there is a problem in defining a particular color, it is a signal that suffers from color blindness.

Very rarely there are cases of people who only see in shades of gray. Most people with color blindness are considered to be those who confuse colors depending on what their color deficiency. If from day to day, there is a limit regarding color vision, its time to go to the doctor. Sudden or gradual loss of color vision can indicate many health problems including cataracts. Detailed examination allows, however, to determine what kind of color deficiency we have.

Causes of Daltonism

Color blindness occurs when light-sensitive cells in the retina do not respond appropriately to changes in wavelength of the light that enable to distinguish the whole palette of colors. Photoreceptors in the retina (called bars and cones) are responsible for vision, and the lack of certain types of cones that help in color vision causes the appearance of an inherited form of color blindness.

Other than the difference in the composition of the genetic eye color-blindness may also be the result of other drawbacks and deficiencies of view associated with:

  • Parkinson’s disease, as it is a neurological disorder, and the light-sensitive retinal nerve cells may be damaged and consequently affected;
  • cataracts – contamination of the eye lens, may disturb the color vision, but surgical removal of the cataract, can restore a clear vision of color;
  • use of medications for epilepsy, can reduce the color image, but problems with color blindness, in this case, are unlikely to be permanent;
  • Leber’s inherited optical neuropathy – mainly associated with red-green vision disorders;
  • Kellman syndrome, one of the symptoms of daltonism;
  • aging – with age may damage the color vision of the eyes.

Treatment of daltonism


So far, there’s no definitive and fully effective method of treating Daltonism has been found. Scientists have discovered some gene therapy, which has a chance to help effectively treat color blindness but it still needed a lot of studies that confirm its safety.

Some people suffering from daltonism seem to be coping well in a colorless world, adapting to visual deficits, but they can be limited, for example, to the choice of particular professions in which color perception is crucial.

Early diagnosis of color vision deficiency can help a lot to cope with learning in school, especially because the initial years of study are based primarily on color perception. Teachers have at their disposal methods of working with children with color blindness, thus reporting a problem facilitates learning.

Some people with color blindness can use special lenses that enhance their ability to experience the colors that occur through special filters in contact lenses or glasses.

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