Fig. 5. Sixth week embryo shows fusion of the maxillary process to the lateral nasal groove forming the nasal pit and nasolacrimal furrow. Note lateral position of developing eye. (Fries PD, Katowitz JA: Congenital craniofacial anomalies of ophthalmic importance. Surv Ophthalmol 35:87, 1990, with permission from Elsevier Science.)