Color Theories
4 views | +0 today
Follow
Your new post is loading...
Your new post is loading...
Scooped by Sierra Laufenberg
Scoop.it!

U.S Researchers Find Color Blindness Cure

Dalton, the squirrel monkey, was born color blind, just like millions of people around the world. Due to a cone cells disorder, Dalton's world was cast in se...
more...
No comment yet.
Scooped by Sierra Laufenberg
Scoop.it!

What Wavelength Goes With a Color?

What Wavelength Goes With a Color? | Color Theories | Scoop.it
Sierra Laufenberg's insight:

Visible light wavelengths (from shortest to longest):

 

Violet has a wavelength of about 400 nanometers (nm).

Indigo has a wavelength of about 445 nm.

Blue has a wavelength of about 475 nm.

Green has a wavelength of about 510 nm.

Yellow has a wavelength of about 570 nm.

Orange has a wavelength of about 590 nm.

Red has a wavelength of about 650 nm.

 

Some wavelengths are too short for the human eye to see, called ultraviolet light. Others are too long for the human eye to see, called infrared light.

 

 

more...
No comment yet.
Scooped by Sierra Laufenberg
Scoop.it!

Color Blindness Causes | Color Blindness

Color Blindness Causes | Color Blindness | Color Theories | Scoop.it
Causes of color blindness include defective genes, eye trauma, Shaken Baby Syndrome, chemicals & particles, UV rays, diseases, and even alcoholism.
Sierra Laufenberg's insight:

Some additional diseases that can cause color blindness:

- Cone Dystrophy

- Cone-Rod Dystrophy

- Achromatopsia

- Blue Cone Monochromatism

 

Color blindness can be caused by more common diseases, such as:

- Alzheimer's Disease

- Liver Disease

- Parkinson's Disease

- Chronic Alcoholism

more...
No comment yet.
Scooped by Sierra Laufenberg
Scoop.it!

How Animals See Color

Different animals have different kinds of color vision. Some have very poor color vision & others have very good color vision. Some have super color vision
Sierra Laufenberg's insight:

- Many wild animals, such as squirrels, birds and fish, have good color vision, but not as vibrant as a humans

 

- Dogs, cats, mice, and rabbits mainly see grays, with some blue and yellow hues

 

- Bulls are completely color-blind, and do not charge at the red cape because it is red, but because it is moving

 

- Bees and butterflies can see ultraviolet light, allowing them to find pollen

 

- Some animals, such as snakes, do not need light to see at all. They can "see" by feeling the heat of an object

 

- Geckos can decipher blue from grey in very dim lighting; humans are color blind in dim lighting.

more...
No comment yet.
Scooped by Sierra Laufenberg
Scoop.it!

Ishihara Test for Color Blindness

Ishihara Test for Color Blindness | Color Theories | Scoop.it
Color chart for the color blind - specifically for selecting web safe colors on the computer.
Sierra Laufenberg's insight:

The Ishihara Test is used to identify color blindness. Those with red-green color blindness are unable to see the 6 within the circle. The full set of 38 Ishihara plates are used to determine whether or not one is color blind, and to what degree.

more...
No comment yet.
Scooped by Sierra Laufenberg
Scoop.it!

GeneTherapy

GeneTherapy | Color Theories | Scoop.it

Dalton, a squirrel monkey who was treated for red-green color blindness.

Sierra Laufenberg's insight:

A new virus is being studied that is able to alter the functioning cones. This has already been tested on monkeys, and researchers believe it will work for humans as well. The virus carries altered genetic information with the missing gene and it is injected into the retina.

more...
No comment yet.
Scooped by Sierra Laufenberg
Scoop.it!

Color Blindness: More Prevalent Among Males

Research and articles about the sense of vision. Learn more about how humans see, how the eye works, color blindness, and more. From the Howard Hughes Medical Institute.
Sierra Laufenberg's insight:

- 10 million American men (about 7% of male population) are color blind, whereas .4% of women are affected

 

- Most common form of color blindness is the lack of functioning red or green receptors

 

- Women carry two X chromosomes; men have one X and one Y; second X makes up for defects in first X

 

- The genes that carry color receptors lie close together on the X chromosome and sometimes there are one or two extra green receptors; the other chromosome that it is exchanging information with may be left with only a red receptor, causing defects in vision. The male who inherits the partially defective gene will be color blind because the chromosome will be lacking a red receptor gene.

 

- It is very rare to be color blind to blue, men or women, because there are no DNA sequences close to that of the blue receptor gene.

 

- Only color blind to blue if there is a mutation in the gene itself; not inherited

more...
No comment yet.