How To Find Out The Type Of Color Blindness Experienced?

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I am a person with color blindness, but I can distinguish all colors from the color blind test or from any object … but there are some that I cannot read the numbers in that color …

1 Answer:

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The human eye has the ability to distinguish colors because it has cone cells in the eye's retina. There are 3 cone cells, red, green and blue cone cells. The brain will get input from these three types of cone cells to determine the color perception of objects seen.


Color blindness itself has various types, in general can be distinguished first to be partial color blindness and total color blindness (or called monochromacy). The condition of total color blindness is very rarely found, but people who have total color blindness will only see a gray world with various shades. There are various types of partial color blindness, generally can be divided into red-green color blindness (which is more commonly found) and blue-yellow color blindness (called tritanomaly if there are only abnormal functions of blue cone cells and tritanopia if blue conus cells not functioning at all). Blind red green can also be divided into 4:

Protanomalies where abnormalities occur in red cone cells. Sufferers see red, orange, and yellow become greener, and colors look bright
Protanopia in which red cone cells do not function at all. Sufferers see red to black, and orange, yellow, green everything looks yellow
Deuteranomalies where there are abnormalities in green cone cells. Sufferers will see yellow and green appear redder, and difficult to distinguish between purple and blue.
Deuteranopia in which green cone cells do not function at all. Sufferers will see red looks brownish yellow and green looks like light brown

Your ophthalmologist will be able to distinguish the type of color blindness you have by checking Ishihara's card. You can ask the doctor who examined you yourself about what type of color blindness you have.

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