Color+Blindness

__Color Blindness :__
//__Written By Joicy Xu 9.6__//

Color Blindness or color vision deficiency is caused by an inherited defect of the light sensitive pigment in special cells – called cone cells in the retina at the back of the eye. Except for genetic causes, color blindness might also occur because of eye, nerve or brain injury, or certain chemical damage. The symptoms for color blindness varies, as some people might not be able to see red, blue or green, if the situation isn't severe, then you may not realize that you're seeing something different from other people. A severer situation would be not being able to tell the difference between colors. The severest color blindness is you would only be able to see shades of black, grey and white. The symptoms themselves aren't deadly, but deadly accidents might happen especially for the severest situation since everything you see is in black and white. There is no cure for color blindness, but a research has shown that if color blinded men (men only) takes vitamin A everyday, and practice looking at light through red and green lens could pass the Air Forces and Navy colorblind exam in three weeks, but since it's still on experimenting stage, there is still no way to cure or control color blindness.

The color of rainbow viewed by person with no color vision deficiency

The color of rainbow viewed by person with **protanopia** (**Protanopia** : Insensitive to red light causing confusion to green, red and yellow)

__**Color Blindness Quiz**__


Number 37 Test for **protanopia**



Number 49 Test for **deuteranopia** (**Deuteranopia** : Insensitivity to green light, causing confusions to green, red and yellow)

Number 56 Test for **tritanopia** (**Tritanopia** : rare, insensitivity to blue light, causing confusion of green and blue)

Bibliography :
"Color blindness - Wikipedia, the free encyclopedia."//Wikipedia, the free encyclopedia//. N.p., n.d. Web. 18 Aug. 2011. http://en.wikipedia.org/wiki/Color_blindness#Red.E2.80.93green_color_blindness

"Color Blindness-Symptoms."//WebMD - Better information. Better health.//. N.p., n.d. Web. 22 Aug. 2011. .

Time. "Medicine: Cure for Color Blindness - TIME." //Breaking News, Analysis, Politics, Blogs, News Photos, Video, Tech Reviews - TIME.com//. N.p., n.d. Web. 23 Aug. 2011. 

n,d. //Normal color flag//. 2011. MediaWiki, America. //Wikipedia//. Web. .

n,d. //Rainbow Protanopia//. 2011. MediaWiki, America.//Wikipedia//. Web. .

n,d. //protanopia test//. 2011. Mediawiki, Wikipedia.//Wikipedia//. Web. 23 Aug. 2011.

n,d. //deuteranopia test//. 2011. Mediawiki, Wikipedia.//Wikipedia//. Web. 23 Aug. 2011.

n,d. //tritanopia test//. 2011. Mediawiki, Wikipedia.//Wikipedia//. Web. 23 Aug. 2011.