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Untitled Prezi

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senieda ornelas

on 22 May 2013

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color blindness Very few people are unable to distinguish colors at all.In most cases of color blindness some colors are confused with other.For example a green object such as grass may appear brown.Color blindness is caused by abnormalities in the pigments of the retinas cone.Nearly all color blindness are presented at birth.More males are color blind then females. Color blindness cant be treated or corrected and it can't get worse. The eye does not "see" The eye doesn't see they pick up patterns of light rays and turn them into nerve signals to optic nerves to the brain.
White light is a mix of light of different colors wavelengths or color we call spectrum red, orange, yellow,green, blue, indigo, and violet. About The Retina The retina contains up to 126 million microscopic light sensitive cells called rods and cones. Each one changes light energy into nerve signals. The 125 plus million rods detect low levels of light but can not distinguish color. Cones see color and details,but they only work in bright light.

Color blindness means that you have trouble seeing red, green, or blue or a mix of these colors. It’s rare that a person sees no color at all. Color blindness is also called a color vision problem. A color vision problem can change your life. It makes it harder to learn and read, and you may not be able to have certain careers. But children and adults with color vision problems can learn to make up for their problems seeing color.

"Eye" world book Enyclopedia 2003 ED. May 15,2013

"Look At Your Body Sense" By, Steve Parker, Book Field, Conneticut, Cooper Beech Books,1996 http://www.webmd.com/eye-health/tc/color-blindness-topic-overview What is color blindness? Eye Health care, April 14,2011 credits Most color vision problems are inherited (genetic) and are present at birth.People usually have three types of cone cells in the eye. Each type senses either red, green, or blue light. You see color when your cone cells sense different amounts of these three basic colors. Most cone cells are found in the macula, which is the central part of the retina. What causes color blindness?
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