Optic neuropathy and amiodarone therapy.

Area of Science:

• Ophthalmology
• Cardiology
• Pharmacology

Background:

• Amiodarone is a potent antiarrhythmic drug used for life-threatening cardiac arrhythmias.
• Optic neuropathy is a potential adverse effect associated with amiodarone treatment.

Observation:

• This report details 13 amiodarone-treated patients diagnosed with optic neuropathy.
• The observed drug-related optic neuropathy presented with milder clinical severity compared to anterior ischemic optic neuropathy.

Findings:

• The incidence of amiodarone-induced optic neuropathy was significantly higher than in the general population.
• The exact cause remains uncertain, potentially involving amiodarone therapy, patient health, or a combination.

Implications:

• Complete ophthalmologic examinations are recommended for all amiodarone recipients.
• Early detection of optic neuropathy may allow for drug discontinuation to prevent vision loss.
• The benefits of amiodarone for cardiac arrhythmias appear to outweigh the risk of optic neuropathy.