When the eye doctor shines a bright light into the patient's eye, the light enters through the cornea, passes through the lens, and is focused on the retina, where photoreceptors convert the light into electrical signals. These signals are then transmitted via the optic nerve to the brain, where they are interpreted as brightness and visual information, allowing the patient to perceive the light.
An eye doctor shines a bright light into a ptients eye in one to two sentences, explain how the patients brain percives the right light
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