Color Blindness

By Brianna Kearney and Juliet Ruhe

Color Blindness

• Color blindness is a sex linked disorder where one can’t see certain colors in the color spectrum. Also, a person can carry this disorder

• As it is sex linked, it is more commonly found in males. 1 in 12 males (about 8% of the population) have it while only 1 in 100 females (less then 1%) are color blind

http://krupp.wcc.hawaii.edu/BIOL100/genetics/genetics3/Image28.gif

Common Types of Color Blindness

• The most common types of color blindness are…Red-Green (99% of people that are colorblind)Blue-Yellow• Ones does not see the world in black and white, just with

out Red/ Green or Blue/Yellow

http://farm1.static.flickr.com/111/275183590_e7edd00506.jpg

Common Types of Color Blindness (Continued)

• As you can see, the term color blindness is misleading. It infers that one sees the world in black, gray and white

• The more accurate term would be COLOR VISION DEFICIENCY (CVD)

http://rm.awarenessnetworks.com/6805823487342555147.jpg

http://images-mediawiki-sites.thefullwiki.org/10/3/1/9/72638461468245495.png

Red Green Color Blindness

• Around the outline of the white boxes is normal vision

• IF you were red green color blind you’d see the world like the box on the left

http://michelf.com/img/icon/sim-daltonism-512.jpg

Yellow Blue Color Blindness

• Again, Around the outline of the white boxes is normal vision

• IF you were yellow blue color blind you’d see the world like the box on the left

http://michelf.com/img/icon/sim-daltonism-512.jpg

Effects of a Person with Color Blindness

• Color Blind people have to find ways to counter the effects of their condition

• Example, driving would seem difficult because reading the stop light colors would be impossible for them

• Though, they just learn the order: red is on top, yellow is in the middle, and green is on the bottom

http://www.carsandracingstuff.com/library/images/stoplight01.png

Treatments?

• Unfortunately, there is no treatment for color blindness• Color Blindness is a lifelong illness• The left is a normal vision of the color wheel and the right is a

color blind person’s lifelong vision of the color wheel

http://3.bp.blogspot.com/_XJseql2u5l0/R2FgzvOpT_I/AAAAAAAABs0/1djgF2kpgNw/s400/color_wheel_normal.jpg

http://1.bp.blogspot.com/_XJseql2u5l0/R2Fg0POpUAI/AAAAAAAABs8/jQu2hTwG6RY/s400/color_wheel_colorblind.jpg

What is the Cure for Color Blindness?

• No cure or procedure is known for fully countering color blindness

• However, scientists have created contact lenses that help color blind people distinguish colors to an extent

http://www.vision1to1.com/EN/HomePage.asp?BGColor=2&Category=8&Article=81

The Ishihara Test

• This test is used to determine if people are color blind

• Try to make out the colored numbers in the different colored circles…

What Number is in the Circle?

http://2.bp.blogspot.com/_04yqJnkcyn4/RhUdTKl-UGI/AAAAAAAAA0E/QlGG8O4iTDw/s320/color+test.jpg

What Number is in the Circle?

http://amysorrells.files.wordpress.com/2010/08/total_color_blind_test_numbers_14.gif

What Number is in the Circle?

http://robinsonscamera.com/images/cimage4.jpg

What Number is in the Circle?

http://3.bp.blogspot.com/_s5m9esR01Gs/StkmUzNMh_I/AAAAAAAADsQ/p9M-OUP6RkE/s320/Ishihara+10.jpg

Answers:

• 1st Picture: #2 • 2nd Picture: #8• 3rd Picture: #5• 4th Picture: #10

Works Consulted“Colorblind Home Page.” Color Vision Testing. N.p., n.d. Web. 28

Jan. 2011. <http://colorvisiontesting.com/>.“Color Blindness.” Human Diseases and Conditions. Vol. 1. New

York: Charles Scribner’s sons, 2000. 228-29. Print.“Color Vision Deficiency.” American Optic Association. N.p., n.d.

Web. 28 Jan. 2011. <http://aoa.org>.Graetzer, Hans G. “Color Blindness.” Magill’s Medical Guide. 4th

ed. Vol. 1. Pasadena, California: Salem Press Inc., 2008. 594-95. Print.

“What Causes Color Blindness?” The Merck Manual of Medical Information. Ed. Mark H Beers, MD. 2nd ed. Whitehouse, NJ: Merck Research Laboratories, 2003. 1280-81. Print.