Contents:
- Medical Video: Top 5 Facts about Color-Blindness
- What is the most disturbing thing for color blind people?
- Different types of color blindness
- 1. Red-green color blindness
- 2. Blind blue-yellow
- 3. Total color blindness
- Other facts
Medical Video: Top 5 Facts about Color-Blindness
Color blindness or more precisely Color Vision Deficiency (CVD) is a term to describe the lack of sensitivity to perception of certain colors. Color blindness is a commonly used term, although it is misleading if interpreted literally because people who have this condition can still see colors, even though they cannot see the difference between several pairs of complementary colors.
Color vision deficiency is not at all related to visual acuity, and this condition is most often caused by hereditary conditions. The weakness of distinguishing red and green is the most common form of color blindness, which is around 99%. There are also blue and yellow color deficiencies, but these are rare and there are no general tests available for that.
What is the most disturbing thing for color blind people?
The following are some unique things that can be troubling to a color blind sufferer:
- When baking a piece of meat, people who have red deficiency cannot know whether the meat is raw or cooked. In addition, many also cannot distinguish between green tomatoes and red tomatoes or between soy sauce and chocolate syrup. There are also people who buy and bite raw bananas, because they cannot know if it is yellow or green, and even natural ingredients make it harder to distinguish colors.
- Some foods may look disgusting for individuals who are color blind. For example, a plate full of spinach will be seen as cow dung.
- However, they can distinguish between oranges and lemons, because oranges appear to have a yellow that is brighter than lemon.
- Someone who is color blind generally cannot interpret chemical testing equipment for pool water, test strips for hard water, soil, or water pH, because they depend on subtle color differences.
- Many people who are color blind cannot guess whether a woman wears lipstick or not. Even more difficult, if they have to distinguish which blonde-haired blue-eyed and green-haired person.
- Lack of vision of color can also interfere with the children affected at a young time. At school, he would have difficulty taking blue crayons to color the sea.
- They will also be confused to see bi-color and tri-color on the LED (Light Emitting Diodes), are the lights that are red, yellow, or green? The same problem also occurs with traffic lights.
Different types of color blindness
1. Red-green color blindness
The most common type of condition is caused by loss photopigments cone red (protan) or green cone (deutran).
Types of red-green color blindness:
- Protanomaly: Red, orange, and yellow turn more green and the colors aren't too bright.
- Protanopia: The red color will be black. While the colors orange, yellow and green, all will appear yellow.
- Deuteranomaly: Yellow and green will look more reddish, and it is difficult to distinguish between violet and blue.
- Deuteranopia: The red color will turn brownish yellow and the green becomes creamy.
2. Blind blue-yellow
This condition is less common than red-green. This is usually caused by loss photopigments cone blue (tritan).
Types of blue-yellow color blindness:
- Tritanomaly: Blue will be green and it is difficult to distinguish yellow and red from pink.
- Tritanopia: Blue will appear green, while the yellow will appear to be violet or light gray.
3. Total color blindness
People with total color blindness (monochromacy) cannot see color at all and their visual acuity may have an effect.
Types of monochromacy:
- Cone monochromacy: People with monochromacy will have difficulty distinguishing colors, because the brain needs to compare signals of various types cone (red, green, and blue) to see colors. When there is only one cone that works, then this comparison is not possible. People with cone Blue monochromacy may also have poor visual acuity, farsightedness, and uncontrolled eye movements (nystagmus). Cone monochromacy belongs to an autosomal recessive disorder.
- Rod monochromacy or achromatopsia: This is a rare type of monochromacy and is the most severe form of color blindness. This is usually present from birth. None of the cells cone have photopigments functional. People with this level of monochromacy see the world in black, white and gray. People with rod monochromacy tend to be photophobic, very uncomfortable in bright environments. Rod monochromacy belongs to an autosomal recessive disorder.
Other facts
Another rare form of CVD is unilateral dichromacy which affects people by having one normal eye and one color blind eye. For every color blind disease, there is no treatment to treat this condition, but that does not mean that people who have color blindness have significant disabilities. At one time, the US army found that people with color blindness could see camouflage colors where people with normal color vision could be fooled by it. In fact, a decrease in the color signal can make the difference in texture and brightness more clearly.
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