Rod Cells
 Custom Search Rod cells are one of two main types of photoreceptor cells found in the retina. They convert light into electrical messages. These messages are sent to the optic nerve which then goes to the brain.
Rods and ConesThere are two different types of photoreceptor cells that make up the retina - rods and cones. They are so named because of their shape.There are many more rods than cone cells in the retina - especially outside the macula. The human eye contains about 130 million rods and about 7 million cones. Rods are: √ More light sensitive than cone cells and are responsible for our night vision. √ Used for our peripheral vision and are concentrated in the outer edges of the retina. 
√ Responsible for our night vision. Rods are needed for the perception of light and darkness and adapting to night time vision√ Responsible for sensing motion √ Cannot transmit sharp images or perceive fine detail. Cone cells give us our detailed vision √ Not sensitive to and cannot perceive color. Cone cells allow us to see in color For More Information:
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