Color blindness, or colour blindness is called the eye of the patient test results to the wrong color image variable. From someone who is a normal eye. The eye is an organ essential for living a normal, happy in the society. If it happens Unusual, whether it is a matter which affects vision. That person inevitably affected in one way or another. Colorblind is a problem that affects the life of jli.
Normally our eyes with pixel Aperture 2 groups as the pixels get light that knows no color, dark or bright, can be separated out and are sensitive to stimulation, even in little light, such as at night. The second pixel cell acts different color vision is divided into pixels. Another three types according to the degree of light waves or color catalyzes is the photoreceptor cell red. Blue pixel cell and get a green light for another color. To stimulate such pixels more than one type, then, our brains interpret the image into the desired color such as purple is caused by light stimulating all pixels receive a red light and blue light reception in the pixel. An equal level, which this second group of pixels will work well there must be enough light so Dim we can't separate the colors of objects but also tell. Shape because it has to work in pixels of the first group. When lit up, so we see color.
The type of color blindness
Color blindness Found in 8% of the population is divided into 2 major groups.
The group is from birth (congenital color vision defects) group, which is unusual since the two sides eye generator will have symptoms of an abnormal color vision the same constant does not change. Who can see color. Usually need to have Aperture cell retinal color color is all red, green and blue, and have been in normal cells, including nervous system and normal results with the disorder of the pigments and photoreceptor blue it is controlled by genes on chromosome 7, there is a autosomal dominant form that will convey patients found this little group.
The group is later (acquired color vision defects) is often caused by a neurological disease of the retina or optic nerve inflammation often red than other colors, and it may be just a little bit of color is supposed to be darker than normal or it may be a separate color, it is not.
The first group is a group that is often found at the origin is from a group that is more often when considering a group from birth, subgroups, the most common is the green-red-blind group which is found approximately 5-8% of men and 0.5% of women only (men's lot.) Parts in group a later often found as blue-and-yellow blocking famine found equally both male and female, to which a number of people are in this group, group a, but many generators.
Causes of color blindness
Color blindness (Clor blindness) is caused by a type of nerve cell in the eye, which are sensitive to different colors is defective or deformed. The eye is not able to see a specific color. There are many types of color blindness types everyone generally include a blind green color with red (Red – Green blindness), which would make it impossible to separate the red and green colors from other colors, so that the blind will see type things in the world is blue yellow black white and gray color is a mix of all of them.
The image shows the heredity by chromosome
This disease is found in men than women, and usually with a red-green, almost entirely due to the fact that genes that control pigment colors red and green, then type (red-pigment gene, the green-pigment gene) is a gene on the X chromosome when missing in this one, it will make a person can perceive those colors than normal people, of course, women have less because women have two X chromosomes, to. If only one X has these genes can recognize the colors already, while men have one X chromosome, another is Y, which do not have this package comes packed with gene;) it will show symptoms when one X exists then the fault goes.
There are many types of color blindness, the most common type is called the red/green colour blindness by to separate red and green rather troublesome, especially the light not bright students. A minority of the people who came down with blind. The color is, they cannot separate the blue and yellow will. "is color blind color at all, but a very small section. Red-green colour blind people are often blind blue-yellow with. This is what type of color blindness, there are plain sight or vision (vision) which is normal, but just the ability to separate colors. Not normal.
Groups that are unusual, that came later, often caused by destruction of the optic nerve can dash or catalogue parts recognized in various ways, such as brain inflammation. Hypoxia ischemic accident, tumor of the retinal deterioration or adverse side effects from drugs or chemicals.
Often the patient has symptoms, also called a color or colors to the original by many irregularities of seeing blue over yellow red green, disorders of the eye, the two sides are