Distribution,+structure+and+function+of+the+photoreceptor+cells


 * || ** Rods ** || ** Cones ** ||
 * ** Distribution ** || * Distributed evenly around the whole surface of the retina.
 * Approximately 125 million rod cells in the eye. || * Highly concentrated around the fovea.
 * Approximately 6 million cone cells in eye. ||
 * ** Structure ** || * An elongated rod shaped cell. || * An elongated cell with a conical ending. ||
 * ** Function ** || * Very sensitive to light allowing for the absorption of light.
 * Suited for night vision when not much light present to provide black and white images to the brain. || * Distinguish between colors.
 * Not very sensitive to light.
 * Not effective when minimal light is present. ||



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