Figure 3. Cerebral and orbital MRI images. A: Family A, Patient IV:5. B: Family B, affected daughter. Orbital hypoplasia. Coronal images, T2-weighted. Agenesis of the eye globes. Rudimentary extraocular muscles. Present and normal lacrimal glands. C: Axial image. T1-weighted. Family A, patient IV:5. Absent frontal sinus. D: Axial image. T2-weighted. Family B, affected daughter. Corticosubcortical atrophy, predominantly in the frontotemporal lobes, with ex vacuo dilation of the ventricles.