(tes'yā), an anatomic classification of facial, craniofacial, and laterofacial clefts that uses the orbit as the primary structure for reference. Fifteen locations for clefts are differentiated.
Tes·si·er clas·si·fi·ca·tion
(tesyā klasi-fi-kāshŭn) Anatomic classification of facial, craniofacial, and laterofacial clefts that uses orbit as primary reference structure.