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Why do humans need rods & cones for vision?

1 doctor weighed in
Dr. Richard Bensinger
Ophthalmology

In brief: Pixels

Rods and cones are individual cells packed into the retina as a carpet of light receptive capacity.
They sum their input to put together a nerve input to the brain which is the site of actual image formation. Rods have less tight packing but greater sensitivity. Cones are packed very tightly and perceive fine detail and color. You should love your rods and cones.

In brief: Pixels

Rods and cones are individual cells packed into the retina as a carpet of light receptive capacity.
They sum their input to put together a nerve input to the brain which is the site of actual image formation. Rods have less tight packing but greater sensitivity. Cones are packed very tightly and perceive fine detail and color. You should love your rods and cones.
Dr. Richard Bensinger
Dr. Richard Bensinger
Thank
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