Reconstruction involves repair of the orbit and associated structures, including the surrounding skin tissues, tear passages, and bony walls. These can occur from a wide variety of causes, including trauma, nasolacrimal (tear duct) problems, removal of cancer (for example, Mohs’ reconstruction after a dermatologist has resected a skin cancer), orbital fracture repair, enucleation (removal of eye) or exenteration (removal of orbit), or other prior surgery.