Tag: Pupillary constriction

The size of our pupils is regulated by the autonomic nervous system, and approximately 55% of patients in one ICU study showed smaller pupils when receiving fentanyl, an opioid. A notable side effect of several drug classes is pupillary constriction (miosis), and understanding which group of medications causes pupillary constriction is critical for accurate diagnosis and clinical management, especially in overdose situations.

Pupil constriction, or miosis, is a key clinical sign associated with the use of various substances, most notably opioids. A deeper understanding of which of the following drugs causes pupils to constrict is essential for medical professionals, caregivers, and anyone concerned with drug effects on the body.

Miosis, or the excessive constriction of the pupil, occurs when the diameter of the eye's opening shrinks to less than two millimeters. A prominent and clinically relevant example that causes miosis is the use of opioid medications.