what nervous system controls the eye pupil?

The eye pupil is primarily controlled by the autonomic nervous system, which includes both the sympathetic and parasympathetic branches. The sympathetic nervous system dilates the pupil (mydriasis) in response to low light or stress, while the parasympathetic nervous system constricts the pupil (miOSis) in bright light or when focusing on close objects. This regulation allows the eye to adapt to varying lighting conditions and visual demands.