Anatomy Of Lower Eyelid

Lockwoods ligament arises from the medial and lateral retinaculum and fuses with the capsulopalpebral fascia inserting in the inferior tarsal border. The upper eyelid extends superiorly to the eyebrow which separates it from the forehead.

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Grays Anatomy Standring 2005 describes that the lower eyelid skin is supplied principally by the infraorbital branch of the maxillary nerve and small branches of the lacrimal and infratrochlear nerves However the distribution pattern of each nerve is never clearly described nor is the plane where the nerves course.

Anatomy of lower eyelid. The superior tarsus also acts as the attachment site of the levator palpebrae superioris. A review of the literature based on the authors experience. Free powerpoint templates anatomy of eyelid.

The lower eyelid has an analogous interior suspensory ligament called Lockwoods ligament. With age there is a gradual lateral shift of this point as the tarsal plate migrates laterally. An eyelid is a thin fold of skin that covers and protects an eyeThe levator palpebrae superioris muscle retracts the eyelid exposing the cornea to the outside giving vision.

Structures that should be considered in the description of eyelid anatomy include the skin and subcutaneous tissue orbicularis oculi muscle submuscular areolar tissue fibrous layer consisting of the tarsi and the orbital septum lid retractors of the upper and lower eyelids retroseptal fat pads and conjunctiva. The one on the inner aspect is called the medial canthus while that at the outer aspect is called the lateral canthus. With the exception of the prepuce and the labia minora it has the thinnest skin of the whole body.

The human eyelid features a row of eyelashes which serve to heighten the protection of the eye from dust and foreign debris as well as from perspiration. The upper eyelid starts at the eye and extends up words. In Horner syndrome loss of sympathetic tone results in 2 mm of upper eyelid ptosis and also lower lid ptosis.

There is a sympathetically-innervated muscle in the lower eyelid that functions as the analogue of the Müller muscle the capsulopalpebral inferior tarsal muscle which inserts on the lower border of the lower eyelid tarsus. At the junction of the ciliary and nonciliary parts of the lid margin 7. Anterior protrusion of the fat compartments in this segment results in distinct and well-localized bulges Figure 2.

The lower lid rests at the inferior limbus and peaks 1 mm lateral to the center of the pupil. It is important to understand the correlation between the clinical presentation and the individual anatomy to direct an adequate treatment. The eyelid cheek junction is the area defined by a groove or a dark soft tissue depression known as the tear trough.

The adjacent forehead and midface influence correct eyelid positioning. The anterior lamella is the skin and orbicularis oculi muscle the middle lamella is the tarsal plate and orbital septum and the posterior lamella is the conjunctiva and the lower lid retractors. The human eyelid features a row of eyelashes along the eyelid margin which serve to heighten the protection of the eye from dust and foreign debris as well as from.

Eyelid movable tissue consisting primarily of skin and muscle that shields and protects the eyeball from mechanical injury and helps to provide the moist chamber essential for the normal functioning of the conjunctiva and corneaThe conjunctiva is the mucous membrane that lines the eyelid and covers the visible portion of the eyeball except the cornea the transparent part of the eyeball. The upper and lower eyelids along with the upper and lower puncta oppose the globe. Eyelashes Anterior border of margin of the eyelid Found in the lateral part of the lid margin Punctum.

Common malpositions of the lower eyelid include entropion and ectropion rehabilitative surgery of which requires a thorough understan. Glands of eyelid Glands of Moll 12 mm long Simple spiral modified sweat glands Obliquely in contact with and parallel to the bulbs of the cilia. Anatomy of the lower eyelid The lower eyelid can be separated into an anterior lamella containing the skin and the preseptal and pretarsal parts of the orbicularis oculi muscle and into a posterior lamella containing the tarsus the orbital septum the inferior tarsal muscle and the capsulo-palpaebral fascia Fig.

The superior tarsus upper eyelid and inferior tarsus lower eyelid. There are two points at which the upper and lower eyelids meet. The upper eyelid margin forms a smooth arch with the highest point positioned between the medial limbus and the pupil.

The preseptal segment of the lower eyelid is where the orbital septum and orbital fat are located. Similarly the lower eyelid lies at the border of the lower limbus. The lower eyelid margin is found at or just above the inferior limbus.

Understanding the anatomy of the lower eyelid and the lid-cheek junction is important for surgical and non-surgical approaches. An update The gross anatomy of the lower eyelid is analogous to that of the upper eyelid however the lower eyelid has a more simplified structure with less dynamic movement. The upper lid naturally rests 1 to 2 mm below the superior limbus and peaks 1 mm medial to the center of the pupil.

An eyelid is a thin fold of skin that covers and protects an eye. There are two plates. Aging Eyelid Anatomy The lower eyelid is formed by three lamellae.

The description above only offers a superficial overview of the anatomy. They act to form the scaffolding of the eyelid and are composed of dense connective tissue. The anterior middle and posterior lamella.

Both of these have a unique angle at which the upper and lower eyelids meet. The lower lid extends below the inferior orbital rim to join the cheek forming folds. This can be either voluntarily or involuntarily.

The upper and lower eyelids meet at an angle of approximately 60 degrees medially and laterally.

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