A 15 yr old boy was in biology class when his teacher was talking about people with colorblindness. The class laughed as they all called out the numbers they saw from a sheet that the teacher was holding up. The young boy was doing the same thing until all of a sudden he didn't see one of the numbers and raised his hand. He told everyone that he couldn't see the number as he sat in amazement. The young boy had no idea he was colorblind until that day.
REASONS FOR LISTENING:
A.) Color blindness might not seem like that big of a deal however, to those who are color blind it is. It is mostly men who inherit color blindness, affecting about 1 in 20 men for every 1 in 200 women.
B.) I'm intrigued by the subject because that young boy was me and …show more content…
that's how I found out that I was color blind
SPECIFIC PURPOSE: So in my presentation I hoped to give ya'll a better understanding color blindness itself and give ya'll a taste of how exactly it is that we see the world
FORECAST:
I will do this by:
1. Explaining what it means to be colorblind and
2. Give you an example of how we see everything
BODY:
Point #1:
The human eye sees by light stimulating the retina. The retina is made up of what are called Rods and Cones. The rods, located in the retina, give us our night vision, but can not distinguish color. Cones, located in the center of the retina, are not much good at night but do let us perceive color during daylight conditions.
The cones each contain a light sensitive pigment which is sensitive over a range of wavelengths. Genes contain the coding instructions for these pigments, and if the coding instructions are wrong, then the wrong pigments will be produced, and the cones will be sensitive to different wavelengths of light (resulting in a color deficiency). The colors that we see are completely dependent on the sensitivity ranges of those pigments.
Many people think anyone labeled as "colorblind" only sees black and white - like watching a black and white movie or television. This is a big misconception and not true. It is extremely rare to be totally color blind. There are many different types and degrees of colorblindness - more correctly called color deficiencies.
People with normal cones and light sensitive pigment are able to see all the different colors and subtle mixtures of them by using cones sensitive to one of three wavelength of light - red, green, and blue.
A mild color deficiency is present when one or more of the three cones light sensitive pigments are not quite right and their peak sensitivity is shifted. A more severe color deficiency is present when one or more of the cones light sensitive pigments is really wrong. 5% to 8% of the men and 0.5% of the women of the world are born colorblind. That's as high as one out of twelve men and one out of two hundred women.
Point #2:
Now as you can see, at the top of my poster is a color blind test. You should see the number 45, however if you are colorblind you will see nothing but spots. To give you a better example of what it's like to actually be colorblind, I went ahead showed you what the color red and green look like to you (as if you needed to be reminded). Now underneath is a better way of seeing what colorblind people see. I know it's hard to imagine just exactly what it's like but try this. Try picturing the color green actually looking red and the color red actually looking green.
SUMMARY:
In summary, I have explained to you what color blindness is and I have given you examples of what it's like to be colorblind. Hopefully this speech has better helped your understanding of the disorder.
FINAL NOTE:
As I leave you today, just know that I can drive and being colorblind doesn't effect my skill any. If you didn't do too well on the test, go to the doctor and ask him to give you a color blind test, who knows you might be right here with me. If you are colorblind don't freak out because it's really not the end of the world.
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