What is the levator palpebrae superioris muscle?

The levator palpebrae superioris muscle is used to correct ptosis through surgery. So what is the levator palpebrae superioris muscle and what is its significance? Here is some knowledge about the levator palpebrae superioris muscle.

1. The levator palpebrae superioris muscle originates from the tendon ring around the optic foramen, spreads out in a fan-shaped pattern along the upper orbital wall to the orbital margin, one part ends in front of the tarsal plate, and the other part passes through the orbicularis oculi muscle and ends under the skin of the upper eyelid. It is innervated by the oculomotor nerve and is responsible for lifting the upper eyelid.

2. Double eyelids refer to a shallow groove on the upper eyelid skin above the eyelid margin. When the eyes are open, the skin below the groove moves up, while the skin above the groove hangs down at the eyelid groove. To form a pair of beautiful double eyelids, we must consider the shape and width of the double eyelids, the swelling of the upper eyelid, the width of the palpebral fissure, the curvature of the eyelid margin, the ratio between the height and width of the eyes, and the distance between the eyebrows and eyes.

The levator palpebrae superioris muscle is the most important anatomical structure in ptosis correction surgery. When performing levator palpebrae superioris muscle resection and shortening, the orbicularis oculi muscle should be incised first to expose the orbital septum and separate it from the levator palpebrae superioris aponeurosis. The orbital septum and orbital fat should be pushed back and upward to fully expose the aponeurosis. After the levator palpebrae superioris muscle is determined to be correct, the levator palpebrae superioris muscle flap can be separated. When shortening, the height of shortening or folding of the levator palpebrae superioris muscle should be determined according to the muscle strength and the height of the eyelid margin. For mild ptosis, we generally use levator palpebrae superioris muscle folding.

1. Change the dressing every day and pay attention to the condition of the cornea.

The lower eyelid traction sutures were removed after 2 and 3 days.

3. Remove the skin sutures after 5 to 7 days.

1. When injecting anesthetic into the fornix, be careful not to inject it too deep to avoid injecting the anesthetic into the Müller muscle.

2. Before the operation, the amount of muscle to be removed should be estimated based on the patient's age, levator muscle strength, and ptosis. During the operation, the thickness and elasticity of the levator muscle should be taken as the main basis for removal. This operation is both a levator muscle resection and anterior levator muscle migration.