light reflex

• Terme médical désignant le réflexe de constriction automatique de la pupille en réponse à la lumière, utilisé pour évaluer les fonctions neurologiques.

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.

   Réflexe pupillaire à la lumière

   • 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.