Tag: Horner s syndrome

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.

Pupils naturally constrict and dilate thousands of times a day in response to light, but in a miotic eye, the pupil remains persistently small. A miotic eye is a medical term for a condition of abnormal and sustained pupil constriction that can affect one or both eyes, often signaling an underlying health issue.

Apraclonidine hydrochloride is a relatively selective alpha-2-adrenergic agonist that reduces intraocular pressure (IOP) [1.2.1]. This article explores the question, 'What does apraclonidine do to the eyes?', detailing its mechanisms, uses, and side effects.