What type of is lens present in human eye ?
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camera type lens is present in our human eye
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Retina : The inside surface of the rear part of the eye ball is called retina. The eye lens focuses the image of the object on the retina by bending the light rays. The retina is covered with lare number of nerve cells, which are of two types : cones and rods .
cones are sensetive to bright light while rods are sensetive to dim light . These cones and rods gets sensitized by light and generate impulses that can be read by Brain.
The brain then sends back messages that tells us what we have seen. Thus, the function of retina is to receive the optical image of the object and then convert it to optical pulses . These pulses are sent to the brain through optic nerve.
cones are sensetive to bright light while rods are sensetive to dim light . These cones and rods gets sensitized by light and generate impulses that can be read by Brain.
The brain then sends back messages that tells us what we have seen. Thus, the function of retina is to receive the optical image of the object and then convert it to optical pulses . These pulses are sent to the brain through optic nerve.
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