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Lateral retinaculum

A combined attachment of structures found laterally that help keep the eyelid suspended in normal position. These structures coalesce approximately 5mm behind the lateral orbital rim at the lateral orbital tubercle (Whitnall’s tubercle) which include the lateral canthal tendon, lateral horn of the levator muscle, the check ligaments of the lateral rectus, fibers of the orbicularis oculi, and the lateral aspect of Whitnall’s (upper eyelid) ligament and Lockwood’s (lower eyelid) ligament.

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