Eye Diagram Rods. This is an opening that lets light in lens this focuses light onto the retina retina light sensitive layer at the back of the eye. However they are not sensitive to color.
Human eye cones structure download scientific diagram. Diagram of the eye even though the eye is small only about 1 inch in diameter it serves a very important function the sense of sight. Color perception the tricks the environment plays on our.
There are two main types of light receptors rods and cones.
The total number of rods in the human retina has been estimated at 110 to 125 million and cones at 63 to 68 million osterberg 1935. The 6 to 7 million cones provide the eyes color sensitivity and they are much more concentrated in the central yellow spot known as the macula. When stimulated they generate electrical impulses which pass to the brain along the optic nerve. Dsource the science of colour visual design colour.