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Transcript of Eli Lelakowski
History of color blindness
Why do people get colorblindness?
Color-deficient vision happens to about 8 % of all men.
The color blindness of yellow and blue are very rare.
Caused by genetic defect the long arm of the X chromosome that mostly happen in men with only on X chromosome.
6% of white male population have with this defect, the percentages in other population varies greatly.
Color vision which pertains to red and green are the most common with these anomalous defects.
When different wave lengths of color hit the retina the eye is sometimes sensitive to different wave lengths.
The rays of light pass through a transparent part in the eye ball and go in the inner eye and on a layer of tissue that is very sensitive.
Then the impulses are carried by nerve fibers into the brain. Then the impulse are gave rise to the sight to by sensitive.
Cool fact about the human eye
900 blinks an hour for the human eye and 500 million blink for an average lifetime.
John Dalton was the first case of colorblindness.
The defect was called Daltonism when he studied colorblindness.
Meryon Charles from 1821 to 1868 took on painting but could only use black and white techniques.
Site: color blindness Date of access: 5/21/15
The eye and vision 5/27/15
Meryon, Charles 1821-1868 5/28/15
Dalton, John 1766-1844 5/28/15
Color blindness 5/28/15
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