Recognize the type of color blind type
| Recognize the type of color blind type |
Are we included ????Let us understand the ins and outs of the eyes:In the eye there are layers of the retina that have 2 kinds of cells to capture light, are stem cells and cone cells. Stem cells are so sensitive to light that they are useful when you're in a dim room, whereas cone cells have better accuracy while also possessing useful fotopigments to distinguish colors.The cone cell has 3 kinds of useful fotopigments to distinguish 3 basic colors, namely red, blue, and green. Color other than the three colors of the da-sar is a combination of the three colors of the da-sar, for example the yellow color is a combination of red and green.Then, what causes color blindness?Color blindness is often caused by genetic inherited from the parents. In red-green blind, the gene responsible for color-blindness is on the X chromosome, so males with only 1 X-chromosome suffer more color blindness than women who have two X chromosomes. While blue is blind yellow is autosomal.Different types of color blindness is owned, also different what he saw.Color blindness is not as simple as black and white, but there are several types of color blindness based on the type of cone cell abnormality and the type of keru-cut cell involved. There are three types of color blindness as follows.1. Blind green-red colorRed-green blindness or red-green co-lor blindness is the most common type of color blindness. This condition is due to the loss or limited function of red-to-red (protan) or green (deutran) red cells. There can be several types of green blind, namely:A. Protanomaly: red cell fotopigmen abnormal cones. The colors red, orange, and yellow look more green.B. Protanopia: red conical cell photopigment is not fully functional. The red color will be seen as black. Some colors such as yellow, yellow, and green look like ku-ning.C. Deuteranomaly: fotopigmen green abnormal cone cells. The colors of green and yellow look redder, and it is difficult to distinguish between purple and blue.D. Deuteranopia: fotopigmen green cone cells are not fully functional. The red color looks yellow brown and green as pale brown (beige).
2. Blue blind yellowBlue blindness or blue-yellow color blindness is less common than blind red. Caused because the blue fotopigment (tritan) is not working or only partially functional. There are 2 types of blue blind yellow, namely:
A. Tritanomaly: blue cone cell function is limited. The blue appears greener and it is difficult to distinguish between yellow and red in pink. This type of color blindness is extremely rare.B. Tritanopia: the number of blue cone cells is limited or lacking. The blue color looks green and yellow looks like purple. Color blindness is also very rare.
3. Total color blindnessThe type of total color blindness or monochromacy makes the patient completely unable to see the color and sharpness of their vision can also be affected. There are two kinds, namely:
A. Monochromatic cone: This type of color blindness occurs due to malfunction of 2 types of conical cells. To be able to see the color, it takes at least 2 types of cone cells so that the brain can compare 2 different signals. If only 1 type of cone cells are working then the comparison process is not running so the color is not visible. There are 3 conjugated cone-dependent monochromatic types that are still working, those are the red conical cone monochrome, monochromatic green-cell, and monochromatic bi-ru cone cells.B. Monochromatic rod: This is the rarest and most severe type of color blindness. In this color blindness, there is no cell to be ruched at all. There are only stem cells that work so that the world is really visible as black and white and gray. Patients with rod monochromation tend to be uncomfortable when in a bright light environment.
How do doctors diagnose the type of color blindness?Many checks you can do to check color blindness, but the most common and easy to do is to use the Ishihara test. A book containing pictures and numbers will be shown to the patient and the patient will be asked to read the numbers in the graphs. However, the color blind test developed by a Japanese physician named dr. This Shinobu Ishihara can only be used for red-colored blind examination.
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