Color Blindness
Seeing the World Differently by Chloe Holbrook
How does it happen?
Color blindness is genetic and is mot common in men. One out of every ten men experience it to a point. People with normal rods and cones in their eyes can distinguish color and can see normally. People who have abnormal rods and cones that are missing pigments cannot distinguish colors, causing the colors to appear different.
What do they see?
There are three types of color blindness:
Protanomaly: a sensitivity to red light
Deuteranomaly (Most Common Form): reduced sensitivity to green light
Tritanomaly (Extremely Rare): reduced sensitivity to blue light
Mutation or Genetic?
Color blindness is a genetic deficiency passed from mother to son through the X chromosome. Since mother passes the gene straight to her son, women are rarely color blind. The gene for red-green color blindness is a sex linked recessive gene. The gene for blue-yellow color blindness is an autosomal dominant trait.
Can it be treated?
Unfortunately, inherited color blindness cannot be treated. Sometimes corrective, tinted contact lenses can be used to enhance the brightness of some colors. This may help the color blind person distinguish the colors easier based off of the brightness.
Diagnosis
A test is used to determine whether the patient can recognize colors. They look at a set of colored dots (like those above) and try to find a pattern, letter, number, or shape within them. The pattern is always a contrasting color from the surrounding dots.
Conclusion
After conducting research on color blindness, I learned that there are more than one type of color blindness and it actually common.
My Sources
http://www.colormatters.com/color-and-vision/what-is-color-blindness
http://colorvisiontesting.com/color2.htm
http://www.colourblindawareness.org/colour-blindness/types-of-colour-blindness/
http://www.medicinenet.com/color_blindness/page2.htm
http://i1.allaboutvision.com/i/me/an0037-260x243.jpg
http://www.color-blindness.com/2006/06/02/chromosomes-involved-in-color-blindness/
http://www.toledo-bend.com/colorblind/Color56.jpg
http://www.colourblindawareness.org/colour-blindness/treatment/