“…8 Posterior lamella deficiency involving tarsus, inferior retractor, or palpebral conjunctiva is usually corrected by using a spacer grafts or inferior retractor recession. 9 Spacers can be autologous (tarsoconjunctiva, 7,10,11 auricular cartilage, 12 hard-palate mucosa graft (HPMG), 13,14 buccal membrane, autogenous dermis skin, 15 pericranial flaps 16 ) homologous (banked sclera, 6,17-19 acellular human dermis 20 ) or synthetic (polytetrafluoroethylene, 21 mersilene, 22 porous polyethylene, 23-25 hyaluronic acid gel 26 ). Lower-eyelid retraction as opposed to cicatrical entropion or ectropion is often due to shortening of inferior retractors and orbital septum.…”