Medically reviewed by Christine L. Larsen, MD Key Takeaways Medications, trauma, and medical conditions can cause miosis or ...

A study has found that people appear more attractive when their pupils are constricted, making their coloured irises seem bigger and brighter. New research by Zachary Estes, Professor of Marketing at ...

Movie demonstrating the increase in accommodative eye vergence and pupil constriction when the fixating eye (left side of image, right eye of subject) is exposed to -5D defocus. The occluded eye ...

Horner’s syndrome is a rare condition that affects the face. Symptoms typically affect only one side of the face, and may include a drooping eyelid, a constricted pupil, and the absence of facial ...

New pupillometry research reveals how post-traumatic stress disorder (PTSD) may affect both branches of the autonomic nervous system. By measuring how someone's pupils dilate and constrict in response ...