light reflex

• Término médico que designa la contracción automática de la pupila en respuesta a la luz, empleado para evaluar funciones neurológicas.

A medical term referring to the automatic constriction of the pupil in response to light entering the eye, used to test neurological function.

1. Pupillary light reflexC1formal

   An automatic response of the pupil to light, where it constricts in bright light and dilates in dim light.

   Reflejo pupilar a la luz

   • The doctor tested the patient's light reflex by shining a penlight into each eye.
   • A normal light reflex indicates proper brainstem function.
   • Damage to the optic nerve can impair the light reflex.