About Rods

 Rods : 

Rods : Rod cells, or rods, are photoreceptor cells in the retina of the eye that can function in less intense light than the other type of visual photoreceptor, cone cells. Rods are concentrated at the outer edges of the retina and are used in peripheral vision. On average, there are approximately 125 million rod cells in the human retina.More sensitive than cone cells, rod cells are almost entirely responsible for night vision.

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