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What are the main types of Colorblindness?

There are Three Main Types of Color Blindness:

  • Deuteranomaly is the most common type of red-green color blindness. It makes green look more red. …
  • Protanomaly makes red look more green and less bright. …
  • Protanopia and deuteranopia both make you unable to tell the difference between red and green at all.

Types of colorblindness
The different forms of colorblindness can be classified according to the affected cone type and the degree of deficiency.


People with typical cones and light-sensitive pigments are able to see different colors by using three types of cone pigments (referred to as L for long wavelengths, M for medium wavelengths and S for short wavelengths) having different spectral sensitivity. This is called trichromacy.


Sometimes vision is based on only two types of cone pigments. This is known as dichromacy.


A mild color deficiency is present when one or more of the three light sensitive pigments in the cones are atypical and their peak sensitivity is shifted (anomalous trichromacy). This can vary from being very mild to almost as severe as dichromacy.


Total colorblindness is very rare but the effects are severe. L-cone, M-cone, or S-cone monochromacy describes a condition where only one type of cone pigment functions, and thus only a single color is perceived.


In rod monochromacy or achromatopsia, there are no working cone pigments in the cones. Achromatopsia can be inherited or cerebral achromatopsia can develop. The terms protan, deutan, and tritan are used to refer to the absence of functional L-cone, M-cone, and S-cone pigments, respectively.


Protanopes (L-cone) and deutanopes (M-cone) are often referred to as red-green colorblind and tritanopes (S-cone) are often referred to as blue-yellow colorblind. This can be misleading, as tritanopes can distinguish between blue and yellow


Deutan color blindness (also known as deuteranomaly) is a type of red-green color blindness in which the green cones in the eye detect too much red light and not enough green light.

As a result red, yellow, green, and brown can appear similar, especially in low light. It may also be difficult to tell the difference between blues and purples, or pinks and grays. Learn more about Deutan and other types of color blindness. Learn more about Protan and other types of color blindness You Can Check Here And Get Colorblindtest.


Protanopia Or Protanomaly?


These two conditions are as close in the description as they are in name, except for one important key factor.


First, let’s understand what part of our eyes is affected by protanopia.


To see color, we have three different types of cones in our eyes. These cones are the short-wavelength, medium-wavelength, and long-wavelength cones.


Protanopia and protanomaly both deal with the long-wavelength cones, or L-cones. The difference between the two is simply to what extent the L-cone is affected.


Protanopia is when the L-cone is completely missing, and the affected person is completely unable to perceive the colors red and green.


Protanomaly, on the other hand, means the L-cone is present but impaired.


The affected person’s ability to perceive red and green is directly correlated to how impaired the L-cone is.




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