The anatomic classification of the anophthalmic eye socket (Types 0-V): A high-level taxonomy classification system.

Eyelid and orbital deformities caused by various defects, such as tumor resection and trauma, whether congenital or acquired, are extremely complex and atypical. Several classifications systems for these anophthalmic conditions have been developed, but none have proven suitable for determining the ideal reconstructive surgical strategy. We therefore designed a novel system known as the Anatomic Classification of the Anophthalmic Eye Socket (Types 0-V) for optimum reconstruction of anophthalmic socket deformities focusing on eyelid and orbital defects. Type 0 is an eyelid defect type, in which only the eyelid is defective; Type I is a phthisis bulbi type, in which the anatomical eyeball is preserved, but the visual function is lost; Type II is a substitution type involving filling with implant packing after evisceration or enucleation; Type III is an enucleation type involving enucleation of the ophthalmus; Type IV is an exenteration (incomplete) type involving exenteration while saving the eyelids; and Type V is an exenteration (complete) type involving exenteration including eyelid defects. Using this classification system, it will be possible to standardize reconstructive procedures of the anophthalmic socket.