English noun: pupillary reflex | |||
1. | pupillary reflex (act) reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller | ||
Synonyms | light reflex, miosis, myosis | ||
Broader (hypernym) | inborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex, reflex action, reflex response, unconditioned reflex | ||