VAN 121: Veterinary Gross Anatomy-II (2+2)

ORBITAL NERVE BLOCK

• Ophthalmic and maxillary branches of trigeminal nerve are sensory in nature and emerge out from the cranium through foramen orbitorotundum.
• The ophthalmic nerve supplies branches to the eye ball proper, eyelids, conjunctiva, lacrimal sac and third eyelid, while zygomatic branch of maxillary nerve supplies to skin of lower eyelid.
• Indications: Evisceration of the eyeball, orbital abscesses, malignant diseases of eye.
• Site: Foramen orbitorotundum through behind the middle of the supraorbital process in the temporal fossa.