Upper Eyelid Anatomy

The upper eyelid crease falls 610 mm from the eyelid lash line. Eyelid anatomy including thickness measurements was examined in numerous age groups.

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In this article we shall look at the anatomy of the eyelids their layers vasculature and innervation.

Upper eyelid anatomy. Roof retro orbicularis oculi fat. Overview of external anatomy. Ptosis drooping eyelid is when the upper eyelid droops or sags due to weakness or paralysis of the levator muscle responsible for raising the eyelid or due to damage to nerves controlling the muscle.

The upper eyelid generally covers 13 mm of the upper cornea and the lower eyelid typically rests at or near the lower limbus. The upper eyelid starts at the eye and extends up words joined the skin of the forehead. The eyelids are split into upper and lower portions which meet at the medial and lateral canthi of the eye.

Similarly the lower eyelid starts at the eye and extends to join the skin of the cheek. Upper eyelid anatomy is complex best remembered by the rule of 2s. The upper eyelid crease is a horizontal indentation formed by the attachment of the superficial levator aponeurosis fibers into the orbicularis oris intermuscular septa and subcutaneous tissue.

Surgery of the eyelid orbit and lacrimal system. It is distinguished from the forehead skin by the presence of eyebrows. Upper eyelid anatomy the upper eyelid is composed of very thin skin structurally dense fibrous tissue tarsal plate and muscles that close protractors and open retractors the lids.

Soof suborbicularis oculi fat. Overview of upper eyelid. Illustration by cyndie c.

The lower lid rests at the inferior limbus and peaks 1 mm lateral to the center of the pupil. American academy of ophthalmology. The highest peak on the upper eyelid lies slightly nasal and the lowest contour of the lower eyelid rests slightly lateral.

Anterior and posterior lamellae separated by an orbital septum. The thickest part of the upper eyelid is just below the eyebrow 1127238 µm and the thinnest near the ciliary margin 32049 µm. Ophthalmology monograph 8 vol 2.

Upper and lower eyelid anatomy. Upper eyelid and lower eyelid. The upper eyelid skin crease superior palpebral sulcus is approximately 8 11 mm superior to the eyelid margin and is formed by the attachment of the superficial insertion of levator aponeurotic fibers 8 9 mm in men and 9 11 mm in women.

The opening between the two eyelids is called the palpebral aperture or opening. Skin and muscle tarsus and conjunctiva. 2 compartments for each eyelid.

Modified from stewart wb. The thickness of skin at 7 mm above the eyelashes was 860305 µm. The upper lid naturally rests 1 to 2 mm below the superior limbus and peaks 1 mm medial to the center of the pupil.

Upper and lower eyelid anatomy. The upper and lower eyelids along with the upper and lower puncta oppose the globe. 2 contents for each compartment.

It can be a manifestation of the normal aging process a congenital condition or due to an injury or disease.

Anatomy Of The Eyelids