Question

What are the functions of rods and cons present on retina?

Answer 1

There are two types of photoreceptors in the human retina, rods and cones.

Rods are responsible for vision at low light levels (scotopic vision). They do not mediate color vision, and have a low spatial acuity.

Cones are active at higher light levels (photopic vision), are capable of color vision and are responsible for high spatial acuity. The central fovea is populated exclusively by cones. There are 3 types of cones which we will refer to as the short-wavelength sensitive cones, the middle-wavelength sensitive cones and the long-wavelength sensitive cones or S-cone, M-cones, and L-cones for short.

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Answer 2

Rods help in night vision which means a person is able to see clearly at night in the darkness

Cats have Rods so they can see everything clearly at night

Cons help us in sensing various colours

Humans have more of Cons so they can see different colours at night