Inferior rectus muscle overaction after cataract extraction

Abstract

Purpose/methods: I reviewed the motility of two patients who had binocular vertical diplopia after cataract operations with peribulbar anesthesia.

Results/conclusions: The binocular diplopia in these patients was a result of inferior rectus muscle overaction in the absence of restriction or weakness of the antagonist muscle. The mechanism could be related to myotoxicity of the anesthetic agents.