Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Pupil constriction
Introduction
Pupillary reflex refers to one of the reflexes associated with pupillary function.
Types include:
Although pupillary dilation is not usually called a “reflex”, it is still usually considered a part of this topic.
Accommodation and vergence are also known as the “near response”, while inhibition of the ciliary muscle is also known as the “far response”.