rod
A type of photoreceptor inside the retina that senses light. Rods are very sensitive and give the eye excellent night vision. Rods can only see in “black and white” in contrast to cones, which are the photoreceptor cells that detect color.
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A type of photoreceptor inside the retina that senses light. Rods are very sensitive and give the eye excellent night vision. Rods can only see in “black and white” in contrast to cones, which are the photoreceptor cells that detect color.