Fourth Cranial Nerve Palsy Associated With Sildenafil Citrate

Fourth Cranial Nerve Palsy Associated With Sildenafil Citrate:





 The trochlear nerve, also called the fourth cranial nerve or CN IV, is a motor nerve (a somatic efferent nerve) that innervates only a single muscle: the superior oblique muscle of the eye, which operates through the pulley-like trochlea.