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Originally made for Japanese Army.Farnsworth Lantern Test Used by the Navy, Marines, and coast Guard.Involves colored signals that have to be identified from a distanceSlide7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