levator palpebrae superioris muscle

(redirected from Levator palpebrae)

le·va·tor pal·pe·brae su·pe·ri·o·ris mus·cle

(le-vā'tŏr pal-pē'brē sū-pēr-ē-ō'ris mŭs'ĕl)
Origin, orbital surface of the lesser wing of the sphenoid, above and anterior to the optic canal; insertion, skin of eyelid, tarsal plate, and orbital walls, by medial and lateral expansions of the aponeurosis of insertion; action, raises the upper eyelid; nerve supply, oculomotor.
Synonym(s): musculus levator palpebrae superioris [TA] , elevator muscle of upper eyelid.
References in periodicals archive ?
1,2 The basic etiology of ptosis is weakness of either of two elevators of the upper lid that include levator palpebrae superioris and muller muscle.
She was diagnosed with TAO, inflammation of the left levator palpebrae superioris muscle, and pseudoptosis of the right eye.
Instead of tarsorrhaphy or gold weight implants to protect the ocular surface in cases of facial paralysis, corneal damage may be prevented by using BoNT-A injection to the levator palpebrae superioris muscle to induce eyelid ptosis.
The degree of ptosis, levator palpebrae superioris function, age of the patient, and the condition of the cornea determine the choice of the surgical procedure.
The ptosis is mostly restricted to the levator palpebrae and later involves other extraocular muscles.
2,3) More severe forms may involve hypoplasia of the levator palpebrae superioris muscle or tendon with a minimal or absent eyelid crease.
It also innervates the levator palpebrae superioris and carries with it the parasympathetic innervations to the pupil.
Because the oculomotor nerve also supplies the levator palpebrae superioris (LPS) muscle and has a parasympathetic component, it contains roughly five times as many axons (approx.
Lagophthalmos in non-leprosy patients is now commonly managed with upper lid closure augmentation procedures that provide a downward force on the upper lid when the levator palpebrae relaxes.
While the levator palpebrae superioris and superior rectus muscles were innervated by the upper branch, the medial rectus, the inferior rectus, and the inferior oblique muscles were innervated by the lower branch (2-4).
Ptosis occurs as a result of a dysfunction of one or both of the upper eyelid elevators--the levator palpebrae superioris and Muller's muscle.
8-11) Movement of the eye and eyelids are intially affected with the levator palpebrae, orbicularis oculi, and extraocular muscles becoming involved.

Full browser ?