There are three main types of color vision deficiency: red-green, blue-yellow, and complete. Color blindness, or color vision deficiency, affects the way you perceive color and can make it hard to ...

Red-Green Color Blindness. It’s when photopigments in your eyes’ red cones or green cones don’t work properly ... Also known as blue-yellow color blindness, you have no blue cone cells.

With dichromatic color blindness, a person sees two colors out of red, green, and blue but not the third. Most people are trichromatic, which means they see all colors.

Color-blind individuals have trouble differentiating between red, blue, and green hues. Approximately 8% of men and 0.5% of women with Northern European ancestry have some form of color blindness .

For individuals with red-green color blindness, purple may appear closer to blue or red, depending on the specific deficiency ...

People with color blindness have color vision defects due to a partial or total lack of cones in the retina. Without these cones, it is difficult to tell the difference between red, green, and blue.