Anatomy Of The Upper Eyelid
In a balanced youthful face the eyebrow is lower medially and higher laterally. The hallmark of a youthful eyelid is a smooth contour extending from the brow to the upper lid and from the lower lid to the cheek and midface.
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It is clinically useful to divide the anatomical structures in the upper lid into three layers the superficial anterior lamella middle lamella and the posterior lamella.
Anatomy of the upper eyelid. A plastic surgery guide to upper eyelid anatomy with labelled images drawings layers structures and function. An epicanthic fold the skin fold of the upper eyelid covering the inner corner medial canthus of the eye may be present based on various factors including ancestry age and certain medical conditions in some populations the trait is almost universal specifically in east asians and southeast asians. From anterior to posterior the structures seen are.
Skin eyelashes cilia gray line meibomian gland orifices mucocutaneous junction palpebral conjunctiva. At the top of the upper eyelid is a fold in the skin called a skin crease or the superior palpebral sulcus. The layers of the upper eyelid vary depending on the location in the eyelid fig.
Anterior to the tarsus the structures from anterior to posterior include skin orbicularis oculi muscle tarsus and conjunctiva. The lower lid extends below the inferior orbital rim to join the cheek forming folds. It lies around 8 to 11 mm above the margin of the upper eyelid and consists of fibres of the levator aponeurosis.
The eyelid consists of five main layers superficial to deep. Similarly there also exists another skin fold in the lower eyelid called the inferior palpebral sulcus. An anatomical variation in humans occurs in the creases and folds of the upper eyelid.
The skin and subcutaneous tissue form the most superficial layer of the eyelid. Eyelid anatomy upper eyelid layers. The layer of skin is among the thinnest.
Skin and subcutaneous tissue. The topographic anatomy of the eyelids and periorbital region is illustrated in figure 1 1. The upper eyelid extends superiorly to the eyebrow which separates it from the forehead.
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. 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.
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