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Treatments for Color Blindness - Types, Causes & Symptoms

What is color blindness?
Color blindness is the inability to distinguish differences between certain colors. The most common type is the red-green colour blindness, where red and green are perceived as the same color.

What is the cause?
  • Color blindness is an inherited condition that is sex-linked recessive. This means that females are the carriers of the colour blindness trait, but males are affected. As a result, very few women are color blind, but approximately 1 in 10 men have some degree of color blindness.
  • Color blindness is a malfunction of the retina, the light sensitive layer of the eye, which converts light energy into electrical energy that is then transmitted to the brain. This conversion is accompanied by two types of photoreceptor cells in the retina; rods and cones. 
  • The cones are responsible for encoding colour. Each cone contains structures or visual pigments sensitive to one of three wavelengths of light - red, green, and blue. Normal persons are able to match all colours of the spectrum by mixtures of only three fundamental colour sensitives. 
  • Hence, the huge variety of colours we perceive stem from the cone cells, response to different compositions of wavelengths of light.
What are the types of colour blindness?
  • The most common form is red-green and has a wide range of variability within this group from very mild to extreme. 
  • The second most common form is the blue-yellow, and a red-green deficit is almost always associated with this form. 
  • The most severe form of colour blindness is achromatopsia, the inability to see any colour, and is often associated with other problems such as amblyopia (lazy eye), nystagmus, photosensitivity, and extreme poor vision.
What are the symptoms?
  • Symptoms may be so mild that affected people are unaware that they are colourblind unless specifically tested. 
  • Most commonly, people have difficulty distinguishing shades of a particular colour. Parents may notice colour blindness in a more severely affected child at the time the child would normally learn colours. 
  • In severe cases, other symptoms such as jiggling eyes (nystagmus) or roving eye movements may be present.
How is it diagnosed?
  • Several colour vision tests are available with your physician or eye specialist (Ophthalmologist). 
  • Testing for colour blindness is commonly performed along with other vision screenings. Usually isihara (pseudoisochromatic) plates are used to test colour vision. They are made of dot patterns composed of primary colours. 
  • These dot patterns represent a symbol that is superimposed on a background of randomly mixed colours. The test can determine certain abnormalities in a person’s colour vision.
What is the treatment?
  • There is no medical treatment for inherited colour blindness. Some acquired colour vision problems can be treated, depending on the cause. Colour blindness that is acquired may sometimes be improved by surgery. 
  • For example, if a person is having trouble seeing colours because of cataracts, surgery to treat the cataracts may improve colour vision. Also, colour vision may be improved if the problem is caused by a side effect of medication and that medication is stopped.
  • Specially tinted contact lenses, eyeglasses, and glasses that block glare (with side shields or wide temples) are helpful because people with colour vision problems can see differences between colours better.

2 comments:

Shraman N L said...

Treatment of colour blindness through brain mapping method, no medicine

A Ray of Hope for Color Blind people (Color Vision Deficiency).
What is Color Blindness OR What are the types of color Blindness is not the question here.
Question is what is the remedy for this problem
Till now there was no hope for this problem or no solutions available.
But in The Memory Guru of India provide service for colour blindness. There are many examples of people who followed this method and they have improved to the extent of normal color vision (Checked by Ishihara chart ). You will come to know the difference in color vision on the first day itself after following this method. This program is very important for those who are looking at a career in the below mentioned field.
1) Aviation (Pilots, Airhostess, etc…. )
2) Merchant Navy or Shipping.
3) Railway services as drivers.
4) Chemical Industries
5) Web Designing
6) Professional Courses – Medical, Engineering, etc….
Many rejected candidates from aviation and merchant navy have been accepted back after their color vision became normal on joining this course.
All Services are on no profit and no loss basis. Charges INR 11000/- for complete training.
Free

Ishihara Test Chart Books, for Color Deficiency - 38 Plate (Complete Edition)
Worth Rs. 5100/- contact nlshraman@yahoo.co.in

Vacurect said...
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