Inferior Rectus Muscle Contracture Syndrome Following Retrobulbar Anesthesia for Phacoemulsification

Sorot Wutthiphan, M.D.*
Department of Ophthalmology, Priest Hospital

ABSTRACT Ipsilateral hypotropia with restricted elevation resulting from injury to the inferior rectus muscle after retrobulbar anesthesia is reported. Computed tomography of the orbit demonstrated mild focal enlargement of the retrobulbar part of the inferior rectus muscle. The findings of magnetic resonance imaging was compatible with fibrosis. Surgical exploration of the peribulbar portion of the inferior rectus muscle showed no visible abnormality. Recession of the inferior rectus muscle, or an adjustable suture, is an effective therapeutic approach for this disorder.

Thai J Ophthalmol 1997 ; July-December 11(2) 189-191.