Red-Green color blindness
Moving on, the most common diagnosis is the diagnosis known as the Red-Green color blindness. Red- Green color blindness is a from of color vision deficiency in which the colors red and green are perceived as identical. It is also known as Deuteranopia. This is found among 6% of the male population. When it comes to this diagnosis, medium wavelength sensitive cones (green) aren't present. A person with Red-Green color blindness can only distinguish 2 to 3 different hues, compared to a person with normal vision, who can see about 7 different hues.
Blue-yellow color Blindness
Blue-Yellow color blindness is also known as Tritan color blindness. For those affected with this type of color vision deficiency, they tend to confuse blue with green, and yellow with violet. Tritan color blindness is caused by the complications with the S-cones, or the short-wavelength cones. This type of colorblindness is not as common as the Red-Green color blindness, affecting only 1 in 1,000 people.