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Head and Neck
Published in Rui Diogo, Drew M. Noden, Christopher M. Smith, Julia Molnar, Julia C. Boughner, Claudia Barrocas, Joana Bruno, Understanding Human Anatomy and Pathology, 2018
Rui Diogo, Drew M. Noden, Christopher M. Smith, Julia Molnar, Julia C. Boughner, Claudia Barrocas, Joana Bruno
The ophthalmic nerve (CN V1) gives rise to three main nerves that lie in the orbital region: the frontal nerve, which runs anteriorly and branches into the supratrochlear nerve and the supraorbital nerve; the lacrimal nerve, which runs anterolaterally to reach the lacrimal gland and lateral eyelid; and the nasociliary nerve, which runs inferomedially and sends branches through the ciliary ganglion (without synapsing) to the eyeball (short ciliary nerves) and directly to the eyeball (long ciliary nerves). The nasociliary nerve also gives rise to the anterior and posterior ethmoidal nerves (Plates 3.15 and 3.33). Both of these innervate the ethmoid sinuses, but the anterior ethmoid nerve also runs through the nasal cavity and to the dorsum of the nose as the external nasal nerve. None of these nerves innervate muscles.
The Triple Heater (TH)
Published in Narda G. Robinson, Interactive Medical Acupuncture Anatomy, 2016
Specifically, the lacrimal nerve, a branch of the ophthalmic division (V1) conveys sensation from the lateral upper lid, conjunctiva, and lacrimal gland. Secretomotor (postganglionic, parasympathetic) fibers from the facial nerve (CN VII) travel briefly with the lacrimal nerve in its distal portion. The nerve then enters the orbit between the lateral rectus muscle and the orbital roof to join the nasociliary and frontal nerves at the superior orbital fissure. The lacrimal nerve communicates with the zygomaticotemporal nerve, which also travels in the company of postganglionic parasympathetic fibers from the facial nerve, destined for the lacrimal gland. The zygomatico-temporal nerve joins with the zygomaticofacial nerve to form the zygomatic nerve that courses along the orbit’s floor to join the maxillary nerve after it enters the inferior orbital fissure. These interneural connections illustrate why TH 23 occupies a key location for stimulation in conditions involving impaired lacrimal secretion, such as dry and itching eyes.3
Local Anesthetics
Published in Jeffrey R. Marcus, Detlev Erdmann, Eduardo D. Rodriguez, Essentials of CRANIOMAXILLOFACIAL TRAUMA, 2014
Alexander C. Allori, Dunya M. Atisha, Jeffrey R. Marcus
The upper eyelid is innervated medially by the infratrochlear nerve and laterally by the lacrimal nerve. The infratrochlear nerve is also anesthetized during the supratrochlear–supraorbital nerve blockade just described. Alternatively, it can be targeted directly by a 2 or 3 ml infiltration 1 cm medial to the supraorbital notch. The lacrimal nerve may be anesthetized by infiltrating 1 ml of local anesthetic superior to the lateral canthus tendon.6
A review of dry eye disease therapies: exploring the qualities of varenicline solution nasal spray
Published in Expert Review of Ophthalmology, 2023
Siddharth Bhargava, Ranjani Panda, Asma M Azam, John D Sheppard
In 2009, Kossler et al demonstrated a significant increase in natural aqueous tear production through direct stimulation of the lacrimal nerve. This idea of neurostimulation encompasses the modulation of neural circuitry through electromagnetic energy or chemical stimulus of anatomic targets [55,56]. As the LFU is regulated through the trigeminal nerve pathway, internal and external changes to neural regulation could affect the components of the tear film, thereby influencing its stability [9].
The Role of Nervous System and Immune System in Herpes Zoster Ophthalmicus Dissemination and Laterality – Current Views
Published in Ocular Immunology and Inflammation, 2023
Yue Li, Louis Tong, Chrystie Quek, Yun Feng
The ophthalmic division of the trigeminal nerve is divided into nasociliary nerve, frontal nerve and lacrimal nerve. HZO involving the frontal nerve most commonly causes ocular disease.8 This includes conjunctivitis, scleritis, keratitis, uveitis and endotheliitis.3 HZO usually first presents as an acute painful eruption of erythema, vesicles, macules, papules and blisters around the periorbital region. Periorbital edema and ptosis may also be present.8