Holmes-Adie Syndrome

**Semantic type:** Disease or Syndrome

**Definition:** A rare syndrome characterized by an abnormally dilated pupil, hypoflexia, and diaphoresis. The syndrome is usually caused by a viral or bacterial infection. The abnormally dilated pupil is caused by damage to postganglionic parasympathetic fibers innervating the eye.

**Synonyms:** - Adie Pupil - Adie Syndrome - Tonic Pupil