Amiodarone-induced vortex keratopathy at a low maintenance dose
Abstract
Vortex keratopathy is a common side effect of amiodarone, which is a class III antiarrhythmic agent. We describe a 50-year-old man who developed vortex keratopahy with amiodarone 200 mg BD for atrial fibrillation since two years. The daily (400 mg/day) and cumulative dose (100 g) combined with the length of therapy is associated with the toxicity. Toxic effects may also be observed at lower maintenance doses, as observed in this patient. This case indicates that multi-organ toxicity due to amiodarone may develop even with short-term use and a low maintenance dose. Having been off the medication for two months, it is expected that the deposition pattern will diminish, as is the case for the vast majority of patients.
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