Color Vision Deficiency Syndrome (Color Blindness)

744 words - 3 pages

Color Vision Deficiency Syndrome, more commonly known as color blindness, is a primarily genetic disease occurring mostly in males, but can also be caused by eye injuries or chemical imbalances.Although the name color blindness sounds as though a person suffers from a complete lack of color vision, this is not the case, with rare exceptions. Color Vision Deficiency is usually a case of being unable to distinguish between two colors. Depending on the colors that are undistinguishable, this may or may not be an inconvenience for the bearer.As a genetic disease, it is inherited via the X chromosome. Because males have only one X chromosome, and depending which numbers are believed, anywhere from thirty to eighty percent of the male population is color blind. This is because the syndrome is a recessive gene, and, since males have only one X chromosome, they do not have a dominant gene to mask the recessive one. Females, however, very rarely carry two X chromosomes with the same recessive gene for Color Vision Deficiency. Thus, only about one in two hundred females suffer from this condition.To understand Color Vision Deficiency, one must first have a basic grasp of the workings of the human eye and colors in general. There are three primary colors for light: red, green, and blue. The eye works based off of these three colors. The eye picks up mixtures of these colors through the retina, which is an intricate, camera-like system that changes light energy into electrical energy that is transmitted to the brain. Within the retina, two types of photoreceptor cells called rods and cones are responsible for this conversion. Cones convert the color, and are equipped with visual pigments that are sensitive to one of the three primary colors of light. Normally, people are host to three types of cones, each type representing one primary color. Rods, on the other hand, are blind to color, and function only in dim light. They are what allow people to see in semi-darkness. They generally tend to outnumber cones with 10-1 odds.Color Vision Deficiency occurs when one or more of the cones are missing. Without cells that can pick up a certain color, that color cannot be seen. In very rare cases, a person is born with no cones whatsoever, and thus sees only through his or her rods, living in a world of black, white, and shades of grey. This type of color blindness is called monochromatism. In another form of...

Find Another Essay On Color Vision Deficiency Syndrome (Color Blindness)

"Color Blindness" Essay

653 words - 3 pages Color blindness is the inability to distinguish particular colors. It is generally an inheritedtrait, but can result from a chemical imbalance or eye injury.There are three primary colors. They are red, blue, and yellow. All other colors are theresults of different combinations of primary colors. Special visual cells, called cones, are respon-sible for our ability to see color. People with normal vision have three different types of cones,each

The Genetic Disease - Color Blindness

465 words - 2 pages than women. This condition affects men much more frequently since color blindness is related to the X-chromosome, of which men have one, and women have two in every cell. The gene that controls the ability to distinguish colors (such as red, green) is found only on the X-chromosome. The dominant allele of this gene produces normal color vision. However, people who have only the recessive allele are color-blind for red and green. The healthy X

The Truth About Color Blindness

2020 words - 9 pages Colorblindness is quite common, about 8% of the male population have it. Color blindness, or color vision deficiency, is the incapability to see color, or notice color differences under normal light. Color Blindness can change a person’s life. It can make it harder to read and learn, and certain careers are unavailable (Williams, 2010). The most usual case of color blindness is a sex-linked condition. This is caused by an error in the

The Advantages of Color Vision

1796 words - 8 pages Peichl stated that many marine mammals lack the S-cone opsin and only have an L-cone opsin (1520). Several of these animals include the harbour seal, toothed whale, ringed seal, eared seal, earless seal, and the bottlenose dolphin. The lack of ability to see more colors is not just applied to the marine mammals. There are two primates that have this color blindness, which are the owl monkey and the bushbaby (Peichl 1520). In the water, color vision

Color Vision Development in Infants

1825 words - 8 pages Color Vision Development in Infants: The Responsibility of Cone Types and Wavelength in Order of Color Development It is a wonderful thing to witness a sunset and see all the various colors that occur in our world. What would it be like if we didn’t view the sunset with all the beautiful colors that are perceived in it? According to Brown, Lindsey, Mcsweeney, and Walters, (1994) without factoring in brightness, newborn infants cannot

Color Blindness in Uncle Tom's Cabin

1092 words - 4 pages Color Blindness in Uncle Tom's Cabin       In the 19th Century, the criteria used to determine the individual's social status would be seen as superficial and inhuman in today's society. In Uncle Tom's Cabin, Harriet Stowe clearly describes a community where the individual's social status is created more by the color of the skin than by his own personal values. Furthermore, Stowe defies the societal belief by giving a "white inside

Color Vision Deficiencies and the Evolution of Color Vision in Primates

2770 words - 11 pages well as apes to have a color vision deficiency. Through genetic and physiological analysis, Lucky was found as protamalous, a form of trichromacy and is referred to as red-weakness color vision (Saito et al.) One study took Lucky and tested his color vision discrimination using a common vision test known as the Ishihara color blindness test that uses pseudoisochromatic plates. He was compared to four other chimpanzees with normal color vision in

Post-Racism and Color Blindness - Miami University: BWS/HST 386 - Essay

2384 words - 10 pages Gibbs 1 Elyse Gibbs Dr. Tammy L. Brown BWS/HST 386 14 March 2017 Post-Racism and Color Blindness Barack Obama, the first African-American president of the United States, was elected in 2009. At that point, many people, some being politicians, considered the nation to be in a “post-racial” state. This term, “post-racial”, means in the simplest terms that the country would have neither racial preference nor racial prejudice. This would also mean

The Evolution of Color Perception and Gender Differences

2482 words - 10 pages color vision deficiencies are looked at, a clear difference between genders is seen. About 8% of men exhibit a hereditary deficiency of color perception (Byrn & Hilbert, 2000). Deficiencies can be due to genetics or can be acquired. The short - wavelength cone type is more fragile;therefore, it is more easily damaged.Complete loss of color vision can also be caused by brain damage. Some types of color deficiency show large statistical differences

Pingelap: Island of the Colorblind

2461 words - 10 pages appears to a person with normal vision(2) People with normal cones and light sensitive pigments (trichromasy) are able to see all the different colors and subtle mixtures of them by using cones sensitive to one of three wavelengths of light - red, green, and blue. A slight color deficiency is present when one or more of the three cones light sensitive pigments are coded incorrectly in the person's genes and their peak sensitivity is

Heterochromia

1087 words - 5 pages the center of the iris near the pupil is a different color than the surrounding iris. This type of Heterochromia is more common than others. Hazel eyes are often referred to as Central Heterochromia because of the discoloration around the pupil. Heterochromia is caused by the lack or complete absence of the pigment melanin in the early development of the body. The deficiency, or complete absence of melanin also causes albinism and is found in

Similar Essays

Color Vision Deficiency Essay

833 words - 3 pages Color Vision Deficiency is the inability to see and differentiate colors correctly. It is more commonly referred to as color blindness. The scientific name is derived from the deficiency or incapability to see color. There are many types of this eye disease. They include Monochromacy, Dichromacy, and Anomalour Trichromacy. Monochromacy is when a person cannot see any color. They see color as variations of grey. A patient with Dichromacy has only

Physics Of Color Vision And Color Blindness

1902 words - 8 pages issues that you will have to look into on your own time! Blue-yellow color blindness is caused by inactivation of the short-wavelength cone cells. Monochromacy has two causes. If a person only has one functioning set of cone cells, they will be completely color blind. If a person has no functioning sets of cone cells, their vision relies entirely upon their rod cells, which also makes them completely color blind. Red-green color blindness can

Color Blindness Essay

848 words - 3 pages Color Blindness Many people refer to problems with one's ability to see color as color blindness, however, unless a person can't see any color at all, color vision problems should be called by another term. Common terms are abnormal color vision, color deficiency and color vision confusion. Females maybe be effected by color blindness, but usually they are just carriers. Males are more often affected. About 8% of males and 0.5% of

Color Blindness Essay

633 words - 3 pages to see color. People with normal vision have three different types of cones, each responsible for a different primary color.      The absence of particular cones causes the absence of particular colors. This can be one cause of color blindness. There are four types of color blindness. The rarest forms are mono-chromatism and a-typical monochromatism. People with monochromatic vision, or total color blindness, has no cones