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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Muscle not paralysed in retrobulbar block
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The correct answer is  Answer- A. Superior obliqueA retrobulbar block is a regional anaesthesic nerve block in the retrobulbar space, the area located behind the globe ofthe eye. Injection oflocal anaesthesic into this space constitutes the retrobulbar block.Cranial nerve IV lies outside the muscle cone,but is blocked by diffusion of the local anaesthetic.Superior oblique is supplied by cranial nerve IV.