To identify any features of posterior embryotoxon that suggest it is pathological rather than physiological.

Unknown Other Sporadic Uveal ectropion; invasion of cornea by conjunctival epithelium; posterior embryotoxon.

Other signs of Alagille syndrome include congenital heart problems, an unusual butterfly shape of one or more of the bones of the spinal column that can be seen in an x-ray, certain eye defects such as posterior embryotoxon, and narrowed pulmonary arteries that can contribute to increased pressure on the right heart valves.