Symptomatic excyclotorsion following inferior transposition of both medial rectus muscles in patients with bilateral trochlear nerve
In classical trochlear nerve
palsy, the affected eye adopts a hypertropic and out-rotated position in primary gaze leading to complaint of vertical and torsional diplopia, especially when attempting to look down and in (eg when reading or walking down stairs).
Dorsolateral view to the brain with meninges: A= cerebrum, B= optic lobe, C= cerebellum, D= medulla oblongata, E= spinal cord, 1= nuchal flexure, 2= abducent nerve., 3= tentorum cerebelli, 4= falex cerebri, 5= dura matter, 6= arachnoid, 7= dorsal cerebral longitudinal fissure, 8= dorsal transverse fissure, 9= olfactory nerve, 10= optic nerve, 11= trochlear nerve
, 12= oculomotor, 13= trigeminal nerve.
OATs are good for eyes###OculomotorAbducent and Trochlear nerves
supply eye muscles
All animals were prepared for aseptic surgery and given local analgesia by giving nerve block to cornual branch of lachrymal nerve in sheep and cornual branches of lacrimal and infra trochlear nerves
in caprines with 2 ml of 2% Lignocaine hydrochloride at each site subcutaneously.
The anomaly of the PCP may also pose an additional obstacle while performing clinoidectomy operations and there are chances of inadvertent injury to the internal carotid artery, the oculomotor and the trochlear nerves