Lacrimal Nerve - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The lacrimal nerve is a nerve of the orbital area. It is a branch of the ophthalmic nerve. It supplies sensation to the conjunctiva and upper eyelid. It also carries parasympathetic fibres to the lacrimal gland. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Course The lacrimal nerve arises from the ophthalmic nerve immediately proximal to the superior orbital fissure. It passes through the superior orbital fissure to enter the orbit. The nerve then travels anteriorly along the lateral orbital wall, along the superior border of the lateral rectus muscle. The lacrimal nerve penetrates the lacrimal gland and orbital septum, terminating as sensory nerves that supply the skin and conjunctiva of the lateral upper eyelid. By TeachMeSeries Ltd (2026) Fig 1Couse of the lacrimal nerve within the orbit. Sensory Supply The lacrimal nerve supplies the skin and conjunctiva of the lateral upper eyelid. Parasympathetic Supply The lacrimal nerve carries parasympathetic fibres from the zygomaticotemporal nerve (a branch of the maxillary nerve) to the lacrimal gland. Activation of these fibres stimulates secretory activity within the lacrimal gland. Adobe Stock, Licensed to TeachMeSeries Ltd Fig 2The lacrimal gland is supplied by the lacrimal nerve. Frequent questions What is the function of the lacrimal nerve? The lacrimal nerve provides sensory innervation to the conjunctiva and upper eyelid while also carrying parasympathetic fibres to the lacrimal gland. This dual function is essential for both sensation and tear production. Where does the lacrimal nerve originate? The lacrimal nerve branches from the ophthalmic nerve just before the superior orbital fissure. It then enters the orbit through this fissure to perform its functions. What areas does the lacrimal nerve supply? The lacrimal nerve supplies sensation to the skin and conjunctiva of the lateral upper eyelid. This sensory supply is crucial for the protective and sensory functions of the eyelid. How does the lacrimal nerve contribute to tear production? The lacrimal nerve carries parasympathetic fibres from the zygomaticotemporal nerve to the lacrimal gland, which stimulates tear secretion. This pathway is vital for maintaining moisture and comfort in the eye. What is the anatomical course of the lacrimal nerve? The lacrimal nerve travels anteriorly along the lateral orbital wall, positioned above the lateral rectus muscle, before penetrating the lacrimal gland and orbital septum. It ultimately terminates as sensory nerves in the upper eyelid and conjunctiva. Rate This Article