ABSTRACT
Knowledge of eyelid anatomy is essential to planning periocular reconstruction. Both anterior and posterior lamellae of the eyelid must be replaced to maximize structural integrity and function. The anterior lamella consists of the skin and orbicularis oculi muscle with its associated vascular elements. The posterior lamella consists of the levator muscle and aponeurosis (upper eyelid), Mu¨ller’s muscle, tarsus, and conjunctiva. The gray line, visible along the middle of each eyelid margin, denotes the junction of the anterior and posterior lamella of the eyelid (Fig. 1). The openings of the meibomian glands mark the mucocutaneous junction and lie just posterior to the gray line.
