Oculofacial reconstruction : current challenges -- Marginal eyelid defects -- Nonmarginal defects of the lower eyelid, cheek, and lateral canthal region -- Nonmarginal defects of the medial canthal region -- Nonmarginal defects of the upper eyelid, eyebrow, glabella, forehead, and temple -- Preoperative counseling, operative protocol and instruments, and postoperative management