This document describes the anatomy and reconstruction of the eyelids. It discusses: 1. The layers and structures of the eyelid including the skin, orbicularis oculi muscle, tarsal plates, levator palpebrae superioris muscle, and conjunctiva. 2. Embryology, blood supply, innervation, and cross section of the eyelid. 3. Specific structures like the orbital septum, tarsal plates, pre-aponeurotic fat, and lacrimal system. 4. Goals and requirements of eyelid reconstruction including reestablishing function, protection, cosmesis as well as anterior and posterior lamellae reconstruction techniques.