Question

An eye doctor shines a bright light into a patient's eye. In one to two short sentences, explain how the patient's brain perceives the bright light.

Answer 1

When the bright light is shone into the patient's eye, photoreceptor cells in the retina, primarily cones, convert the light into electrical signals. These signals are transmitted through the optic nerve to the brain, where they are processed in the visual cortex, allowing the patient to perceive the bright light.