Red-green colour blindness in humans
What is Colour blindnes? Colour blindness is a condition where the eyes have trouble distinguishing certain colours. Red - green colour blindness is a common one. Red-green color blindness is a generic term for protanopia (red-blindness) and deuteranopia (green-blindness). More than 99% of all color blind people are suffering from a red-green color vision deficiency. These color charts show how different colorblind people see compared to a person with normal color vision. Causes The area at the back of the eye, called the retina, is sensitive to light and colour. It contains specialized cells, called cones , which respond to colour. There are three types of cone cells. One responds best to red light, one to green light, and one to blue light. When a specific type of cone cell doesn't work properly, a person will have trouble seeing the colour that particular cone cell responds to. For example, a person with red colour blindness ...
