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Genetic Mutation of Color Blindness
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Genetic Mutation of Color Blindness
How does a person receive the disorder?
Color deficiency is usually genetic, which means it is due to hereditary and passed on from your parents. The gene for which is responsible for the condition carries the mutation on the X chromosome, which makes it a recessive sex-linked disorder. However, color blindness can occur later in life due to diseases that damage the optic nerve or the retina of the eye. Blue color blindness is not located on a sex chromosome so it is equally possible in both genders.
History Behind Color Blindness
Is this disorder more likely to occur in certain populations?
Color blindness is more common in men because the mutation is carried on the X chromosome, which men only have one of as well as a Y chromosome, whereas women have 2. Women must have 2 copies of the allele to be color blind because even with one allele, the other X chromosome can provide the necessary pigments to not be color blind. Men do not have the necessary pigments in their Y chromosome so they are more likely to be color blind.
John Dalton discovered color blindness when he realized he had red-green color blindness, otherwise known as Deuteronomy and Protanomaly( or Dalton. He took interest in the condition and further researched it. He claimed that a fluid in his eyes was tinted blue, causing his inability to determine certain colors. After his death his eyes were examined, revealing there was no tint and his theory was proven wrong by scientists who further researched color blindness.
Other Information:
Diagnosis
How a color blind person sees compared to a person with normal color perception
Inherited color blindness is diagnosed in your early childhood. The Color Plates are used to evaluate the type and degree of color blindness. In these tests, the person is asked to identify the colored shapes or numbers in a jumble of dots that vary in color and intensity.
Treatment for Color Blindness
Internet Sources
https://nei.nih.gov/health/color_blindness/facts_about
http://www.healthcommunities.com/color-vision-deficiency/causes.shtml
http://www.colourblindawareness.org/colour-blindness/causes-of-colour-blindness/
Inherited color blindness cannot be treated or cured, but there are special tinted lenses to normalize the colors you see. Acquired color blindness requires treatment of the underlying cause, but normally when the underlying cause goes away, your eyes regain normal color perception
Signs and Symptoms
By: Kiran Atwal
- Poor vision
- intolerable to bright light
- noticed change in color perception
- inability to pass the Color Plates test
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