(Cornra-Pupil-Lense-Retina-Optic Nerve-Brain)
                Firstly the ray of light passes through external window of eye Cornea. Then it travels through Pupil. If the light is dim the pupil opens largely & vice versa. If the light passes through, it enters into Lens which focuses the light into Retina. The cones & rods in retina strike and it start a chain of event that transform light into bundle of ganglian axons called Optic Nerve which transform the light into Brain. Then finally the brain gives full information of object and we see.

Vision Process

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