Ethambutol: Which Antitubercular Agent Causes Retrobulbar Optic Neuritis?
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5 min read
Ethambutol-induced optic neuropathy (EON) occurs in a small percentage, estimated at 1–2%, of patients receiving the antitubercular agent ethambutol, causing significant, and sometimes permanent, vision loss. The condition, characterized as retrobulbar optic neuritis, is one of the most serious side effects associated with this medication.
