Back
Home
4.5 explain that colour blindness in humans results from the lack of one or more of the colour sensitive pigments in the cones
explain that colour blindness in humans results from the lack of one or more of the colour sensitive pigments in the cones
- There are three colour sensitive types of cones in humans. Colour blindness in humans occurs because one or more of the three types of photopigments in cones is either absent or does not function properly. Complete inability to distinguish colours is rare. The most common form of colour blindness is the failure to discriminate between brown, red and green.
Colour blindness
Howard Hughes Medical Institute, Chevy Chase, Maryland, USA.