Fig. 23. Tessier's number 4 cleft involving left maxilla, orbits and oral cavity. Patient also has Tessier's number 7 cleft on right. (Fries PD, Katowitz JA: Congenital craniofacial anomalies of ophthalmic importance. Surv Ophthalmol 35:87, 1990, with permission from Elsevier Science.)