an eye doctor shines a bright light into a patient's eye. in one to two sentences explain how the patient's brain perceives the bright light.

When the eye doctor shines a bright light into the patient's eye, photoreceptor cells in the retina, specifically rods and cones, detect the intensity of the light. This visual information is then transmitted via the optic nerve to the brain, where it is processed and perceived as bright light, triggering a reflex response to adjust the pupil size for optimal vision.