title: Optic neuropathy following amiodarone therapy.
abstract: Ocular changes during treatment with amiodarone are almost universal but are rarely serious. In this article we describe three patients from a single electrophysiology practice in whom optic neuropathy developed during treatment with amiodarone. All three patients were more than 65 years of age. The doses of amiodarone ranged from 100 to 400 mg/day, and the time intervals between the initiation of the amiodarone therapy and the appearance of first symptoms of optic neuropathy were 5 to 19 months. Two patients had bilateral involvement, and one had only unilateral involvement. Whether this result was due solely to amiodarone therapy, to the underlying poor health of these patients, or to the combination of these two factors is uncertain. These findings prompt us to recommend that all patients who receive amiodarone undergo complete ophthalmologic examinations, including careful evaluation of the ocular fundus regularly during such therapy. No randomized study had been undertaken to determine the true incidence of complications associated with this medication.
authors.affiliation: Arrhythmia Center, The Hospital of Saint Raphael, Yale University School of Medicine, New Haven, Connecticut 06511, USA.
authors.forename: A G
authors.initials: AG
authors.lastname: Sreih
authors.forename: M H
authors.initials: MH
authors.lastname: Schoenfeld
authors.forename: M A
authors.initials: MA
authors.lastname: Marieb
mesh_terms: D000368:Aged; D000638:Amiodarone / Q000008:administration & dosage / Q000009:adverse effects*; D000889:Anti-Arrhythmia Agents / Q000008:administration & dosage / Q000009:adverse effects*; D004305:Dose-Response Relationship, Drug; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009896:Optic Atrophy / Q000139:chemically induced* / Q000175:diagnosis; D015594:Optic Disk Drusen / Q000139:chemically induced* / Q000175:diagnosis; D010211:Papilledema / Q000139:chemically induced* / Q000175:diagnosis; D014792:Visual Acuity / Q000187:drug effects; D014794:Visual Fields / Q000187:drug effects
chemical_list: D000889:Anti-Arrhythmia Agents; D000638:Amiodarone