Amiodarone optic neuropathy without disc edema.

A 48-year-old man presented with bilateral blurred vision and visual field changes while prescribed amiodarone. Improvement of vision and visual field defects was documented within 3 weeks after discontinuation of the medication, and complete resolution occurred at 3 months. A unique feature of this amiodarone-associated optic neuropathy is the absence of any optic nerve edema.