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Nathan Krohne Nathan Krohne

Nathan Krohne - PowerPoint Presentation

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Nathan Krohne - PPT Presentation

Color Blindness Discovery John Dalton an English chemist was the first to report the disorder F irst general condition of color blindness was called Daltonism Dalton believed that a colored liquid inside the ID: 606207

blindness color therapy gene color blindness gene therapy 2014 cells retrieved york theory colorblindness somatic february medicinenet eye germline thomas colored colorblind

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Slide1

Nathan Krohne

Color BlindnessSlide2

Discovery

John Dalton, an English chemist, was the first to report the disorder

. First general condition of color blindness was called Daltonism Dalton believed that a colored liquid inside the eyeball.Scientists dissected his eye.proved wrong after his death.Slide3

New Theory

Thomas Young and Hermann von Helmholtz were the first to propose trichromatic color

vision.

By 1850 Thomas and Hermann expanded the theory further.The theory wasn’t proven until 1958.By 1983 the theory was complete.

Thomas Young

Herman Van HelmholtzSlide4

Etiology

8% European

decent

4% African American decent.4% of women.X-linked recessive inheritance trait Effects of color blindness can vary from mild to severe depending upon the defected gene.

Red-Green colorblindness accounts for 6% of men with the disorderSlide5

Symptoms

M

ay

be able to see some colors but not others.Harder to detect than one might think, particularly in children.A colorblind person may only be able to see a few shades of color, whereas others can see thousands of shades of color.

Red-Green Colorblind

Normal ColorSlide6

Colorblind Tests

Most popular is

Ishihara Plate

test.38 images of random colored circles.Originally made for Japanese Army.Farnsworth Lantern Test Used by the Navy, Marines, and coast Guard.Involves colored signals that have to be identified from a distanceSlide7

Somatic Gene Therapy

W

orks

by delivering therapeutic DNA into a patient's cells Somatic gene therapy= DNA to somatic cells, or non-sex cells. will only affect the individual, not the next generation.

currently over 600 experiments of somatic cell gene therapy

in

the United

States.

only for treatment; complete cure of the mutated gene is not yet available. Slide8

Germline Gene Therapy

W

orks

by joining a modified gene with germ cells to form a zygote.Germline gene therapy= intended for sex cells only.Heritable and passed on

to

later generations.

E

thical reasons and risk to future

generations

may prohibit

Germline

gene therapy

T

remendous

advancements since the first experiment in

1990.

Genetic engineering. Slide9

Society on Colorblindness

N

o discrimination.

A lot of misconceptions.Difficulties reading color-coded maps.Difficult or impossible to get certain occupations. Slide10

Work Cited

Color Blindness. (2010, May 14).

What is Color Blindness

. Retrieved February 10, 2014, from Colour-Blindness: http://www.colour-blindness.com/  Evans, A. (2008). Color Is In The Eye Of The Beholder. Boston, massachusetts: CVD Publishing. 

Kennard, J. (2007,

Janurary

7). Color Blindness in Men.

Mens

Health. Retrieved February 10, 2014, from

About.MensHealth: MensHealth.about.com MedicineNet. (2012, May 14).

Color Blindness

. Retrieved February 9, 2014, from

MedicineNet

:

MedicineNet.com

 

Phillips, R. H. (1995).

Coping With Colorblindness

(Vol. 1). New York City, New York:

Avery.

 

Wearecolorblind

. (2012,

Janurary

10).

A introduction to colorblindness

. Retrieved

February 9, 2014, from

Wearecolorblind

:

Wearecolorblind.com

 

WebMD. (2011, April 2011).

Eye Health Care

. Retrieved

Feburary

9, 2014, from

WebMD.com

 

Williams, P. (2010).

Color Blind A Memoir.

New York City, New York: St. Martins

Pres.