Orbital septum

septum
The orbital septum (Palpebral fascia) is a membranous sheet that acts as the anterior boundary of the orbit.wikipedia
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Orbit (anatomy)

orbitorbitseye socket
The orbital septum (Palpebral fascia) is a membranous sheet that acts as the anterior boundary of the orbit.
In the adult human, the volume of the orbit is 30 ml, of which the eye occupies 6.5 ml. The orbital contents comprise the eye, the orbital and retrobulbar fascia, extraocular muscles, cranial nerves II, III, IV, V, and VI, blood vessels, fat, the lacrimal gland with its sac and nasolacrimal duct, the eyelids, medial and lateral palpebral ligaments, check ligaments, the suspensory ligament, septum, ciliary ganglion and short ciliary nerves.

Eyelid

eyelidspalpebralpalpebra
It extends from the orbital rims to the eyelids.
The eyelid is made up of several layers; from superficial to deep, these are: skin, subcutaneous tissue, orbicularis oculi, orbital septum and tarsal plates, and palpebral conjunctiva.

Tarsus (eyelids)

tarsiSuperior tarsustarsal plate
In the upper eyelid, the orbital septum blends with the tendon of the levator palpebrae superioris, and in the lower eyelid with the tarsal plate.
The attached or orbital margins are connected to the circumference of the orbit by the orbital septum.

Orbital cellulitis

orbit
The orbital septum is an important landmark in distinguishing between orbital cellulitis (inside the septum) and periorbital cellulitis (outside the septum).
Orbital cellulitis is inflammation of eye tissues behind the orbital septum.

Periorbital cellulitis

cellulitisinfectious eye conditionperiorbit
The orbital septum is an important landmark in distinguishing between orbital cellulitis (inside the septum) and periorbital cellulitis (outside the septum).
Periorbital cellulitis, also known as preseptal cellulitis (and not to be confused with orbital cellulitis, which is posterior to the orbital septum), is an inflammation and infection of the eyelid and portions of skin around the eye anterior to the orbital septum.

Blepharoplasty

eyelid surgeryblepharoplastieseye lift
The operation to correct this is called blepharoplasty.
Sequentially, lower eyelid blepharoplasty can successfully address the anatomic matters of excess eyelid skin, slackness of the eye-muscles and of the orbital septum (palpebral ligament), excess orbital fat, malposition of the lower eyelid, and prominence of the nasojugal groove, where the orbit (eye socket) meets the slope of the nose.

Biological membrane

membranemembranesbiological membranes
The orbital septum (Palpebral fascia) is a membranous sheet that acts as the anterior boundary of the orbit.

Levator palpebrae superioris muscle

levator palpebrae superiorislevator palpebraelevator
In the upper eyelid, the orbital septum blends with the tendon of the levator palpebrae superioris, and in the lower eyelid with the tarsal plate.

Medial palpebral ligament

medial
Medially it is thin, and, becoming separated from the medial palpebral ligament, attaches to the lacrimal bone at its posterior crest.

Posterior lacrimal crest

posterior crest
Medially it is thin, and, becoming separated from the medial palpebral ligament, attaches to the lacrimal bone at its posterior crest.

Face

human facefacialfacial feature
The septum is perforated by the vessels and nerves which pass from the orbital cavity to the face and scalp.

Scalp

scalp hair
The septum is perforated by the vessels and nerves which pass from the orbital cavity to the face and scalp.

Orbital fascia

In front, it is connected with the periosteum at the margin of the orbit, and sends off a process which assists in forming the orbital septum.

Septum

septaseptateseptal
Orbital septum, a palpabral ligament in the upper and lower eyelids

Mongoloid

MongolianMongolian raceEast Asian
The Mongoloid eyelid is characterized by puffiness of the upper eyelid, "superficial expansion of the levator aponeurosis" that are "turned up around this transverse ligament to become the orbital septum", "low position of the preaponeurotic fat" and narrowness of the palpebral fissure.

Supratrochlear artery

supratrochlearfrontal arteriesfrontal artery
It leaves the orbit at its medial angle by piercing the orbital septum with the supratrochlear nerve, and, ascending on the forehead, supplies the integument, muscles, and pericranium, anastomosing with the supraorbital artery, and with the artery of the opposite side.

Lacrimal nerve

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

Dermatochalasis

Weakness in the orbital septum may cause the herniation of the orbital fat pads.