orbital septum


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or·bi·tal sep·tum

[TA]
a fibrous membrane attached to the margin of the orbit and extending into the lids, containing the orbital fat and constituting in great part the posterior fascia of the orbicularis oculi muscle.
Synonym(s): septum orbitale [TA]

orbital septum

A fibrous sheet extending partially across the anterior opening of the orbit within the eyelids.
See also: septum

orbital septum 

A thin membrane containing collagenous and elastic fibres which is attached to the orbital margin at a thickening called the arcus marginale. It is continuous with the tarsal plates of the upper and lower eyelids except where it is pierced by the fibres of the levator palpebrae superioris muscle in the upper lid and the expansion from the inferior rectus in the lower lid. Syn. palpebral fascia; septum orbitale. See dermatochalasis; eyelids; tarsus.
References in periodicals archive ?
Orbital cellulitis in children mostly emerges as a complication of sinusitis because the orbital septum is a very significant barrier against bacteria.
Eyelid.--The eyelid is composed of multiple layers; these are, in order from outermost to innermost, epidermis, dermis, subcutaneous tissue including a thin layer of adipose tissue, orbicularis oculi muscle, orbital septum, levator muscle, tarsal plate, Muller muscle, and palpebral conjunctiva.
If there is no improvement within a few minutes, the surgeon should consider proceeding with disinsertion of the superior canthal tendon, followed by transconjunctival or transcutaneous division of the orbital septum from its attachment to the orbital rim.
Orbita kemiklerinin periostunun ust ve alt goz kapaklarinin kenarina dogru devami ile olusan orbital septum, orbital yapilarin enfeksiyondan korunmasinda onemli rol oynar.
The anterior orbit is defined as the area between the orbital septum and the equator of the globe.
Orbital cellulitis can be classified as pre-septal and post-septal cellulitis based on the anatomic landmark, the orbital septum. The septum forms a barrier, preventing the spread of superficial infection into the deeper orbit.
Orbital septum acildiktan sonra orbitanin ust ic kisminda yag dokusu icinde kunt disseksiyonla SOV'in yeri bulundu.