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Superior orbital fissure

sphenoidal fissure
It passes forward in a separate tube of dura mater, and enters the orbit through the narrowest part of the superior orbital fissure.
lacrimal, frontal and nasociliary branches of ophthalmic (V 1 ).

Lacrimal artery

lacrimal
In the orbit it runs along the upper border of the lateral rectus, with the lacrimal artery, and communicates with the zygomatic nerve, a branch of the maxillary nerve.
It accompanies the lacrimal nerve along the upper border of the lateral rectus and supplies the lacrimal gland.

Conjunctiva

conjunctivalconjuctivabulbar conjunctiva
It enters the lacrimal gland and gives off several filaments, which supply sensory innervation to the gland and the conjunctiva.

Eyelid

eyelidspalpebralpalpebra
Then, it pierces the orbital septum, and ends in the skin of the upper eyelid, joining with filaments of the facial nerve.
In humans, the sensory nerve supply to the upper eyelids is from the infratrochlear, supratrochlear, supraorbital and the lacrimal nerves from the ophthalmic branch (V1) of the trigeminal nerve (CN V). The skin of the lower eyelid is supplied by branches of the infratrochlear at the medial angle, the rest is supplied by branches of the infraorbital nerve of the maxillary branch (V2) of the trigeminal nerve.

Lacrimal gland

lacrimal glandslacrimaltear glands
It enters the lacrimal gland and gives off several filaments, which supply sensory innervation to the gland and the conjunctiva.
The lacrimal nerve, derived from the ophthalmic nerve, supplies the sensory component of the lacrimal gland.

Zygomatic nerve

zygomatic branch
In the orbit it runs along the upper border of the lateral rectus, with the lacrimal artery, and communicates with the zygomatic nerve, a branch of the maxillary nerve.
It also carries post-synaptic parasympathetic fibers (originating in the pterygopalatine ganglion) to the lacrimal nerve via a communication.

Zygomaticotemporal nerve

zygomaticotemporalzygomaticotemporal branch
The lacrimal nerve is occasionally absent, and its place is then taken by the zygomaticotemporal branch of the maxillary nerve.
It runs along the lateral wall of the orbit in a groove in the zygomatic bone, receives a branch of communication from the lacrimal nerve, and passes through the zygomaticotemporal foramen in the zygomatic bone to enter the temporal fossa.

Ophthalmic nerve

ophthalmicophthalmic divisionophthalmic branch
The lacrimal nerve is the smallest of the three branches of the ophthalmic division of the trigeminal nerve.
The lacrimal nerve passes through the orbit superiorly to innervate the lacrimal gland.

Pterygopalatine ganglion

sphenopalatine ganglionpterygopalatinepterygopalatine ganglia
It also carries post-ganglionic parasympathetic fibers (originating in the pterygopalatine ganglion) to the lacrimal nerve via a communication.
It also sends postganglionic parasympathetic fibers to the lacrimal nerve (a branch of the Ophthalmic nerve, also part of the trigeminal nerve) via the zygomatic nerve, a branch of the maxillary nerve (from the trigeminal nerve), which then arrives at the lacrimal gland.

Trigeminal nerve

trigeminalVfifth cranial nerve
The lacrimal nerve is the smallest of the three branches of the ophthalmic division of the trigeminal nerve.

Trochlear nerve

trochlearIVfourth
It sometimes receives a filament from the trochlear nerve that is derived from the branch that goes from the ophthalmic to the trochlear nerve.

Dura mater

duraduralcovering of the spinal cord
It passes forward in a separate tube of dura mater, and enters the orbit through the narrowest part of the superior orbital fissure.

Lateral rectus muscle

lateral rectuslaterallateral recti
In the orbit it runs along the upper border of the lateral rectus, with the lacrimal artery, and communicates with the zygomatic nerve, a branch of the maxillary nerve.

Maxillary nerve

maxillarymaxillary divisionpalatine nerve
In the orbit it runs along the upper border of the lateral rectus, with the lacrimal artery, and communicates with the zygomatic nerve, a branch of the maxillary nerve. The lacrimal nerve is occasionally absent, and its place is then taken by the zygomaticotemporal branch of the maxillary nerve.

Orbital septum

septum
Then, it pierces the orbital septum, and ends in the skin of the upper eyelid, joining with filaments of the facial nerve.

Facial nerve

facialcranial nerve VIIVII
Then, it pierces the orbital septum, and ends in the skin of the upper eyelid, joining with filaments of the facial nerve.

Nasociliary nerve

nasociliarynasociliary branchNasociliary nerve of the trigeminal
It is intermediate in size between the two other main branches of the ophthalmic nerve, the frontal nerve and the lacrimal nerve, and is more deeply placed.

Herpes zoster ophthalmicus

herpes zosterzoster ophthalmicus
The frontal nerve is more commonly affected than the nasociliary nerve or lacrimal nerve.

Zygomatic branches of the facial nerve

zygomatic branchzygomaticzygomatic branches
The zygomatic branches of the facial nerve (malar branches) run across the zygomatic bone to the lateral angle of the orbit, where they supply the orbicularis oculi, and join with filaments from the lacrimal nerve and the zygomaticofacial branch of the maxillary nerve.

Rhinoplasty

nose jobrhinoplastiesrhinoplastic
Lacrimal nerve – conveys sensation to the skin areas of the lateral orbital (eye socket) region, except for the lacrimal gland.