Accommodation Reflex of the Eye | Definition, Purpose & Test

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The pupil-eye reflex, also known as the pupillary light reflex, is an essential neurological response where the pupil constricts in reaction to bright light. This reflex helps protect the retina from excessive light exposure and is a critical indicator of brain function and health. By shining a light into one eye, both pupils should constrict equally, showcasing the intricate connection between the eyes and the brain. Monitoring this reflex is a key component in neurological examinations, reveal