how we see color?

Tweet

all vision in higher animals depends on certain structures in the eye that recieve the image;on the optic nerve,which passes along that image in the form of impulses;and on the optic lobe,the part of the brain that translates the impulses into the picture we see.all of this happens with such speed that we see images the moment we look at them.color vision exists in addition to ordinary vision if special color-recepture structures are present in the eye.without these color receptors,an animal is color-blind if his or her brain cannot process the information from the color receptors.one in about every 30 humans is either partially or completely color-blind.color blindness in humans is a genetic defect that is passed on from parents to their children.it rarely affects women.because what we see is largely determined by the eyes and the brain,instances of color illusions often occur we may see colors that arte not there.