Muscle not paralysed in retrobulbar block
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.
Superior oblique
Lateral rectus
Superior rectus
Medial rectus