Article Date: 12/1/2009

Online Photo Diagnosis

Online Photo Diagnosis

By Gregory W. DeNaeyer, OD

This is a picture of posterior embryotoxon of a patient who has Axenfeld's anomaly. Posterior embryotoxon is a prominent Schwalbe's line that may be a partial or complete bilateral ring and is usually visible on gross external examination. It is an indication of either Axenfeld's anomaly/syndrome or Rieger's anomaly/syndrome, both of which are anterior chamber syndromes that put patients at risk for glaucoma.

Axenfeld's Anomaly

Axenfeld's Syndrome

Rieger's Anomaly

Rieger's Syndrome

The patient featured in the photograph maintains normal IOP with no indications of glaucoma. She will be monitored yearly.


Catania, LJ. Primary Care of the Anterior Segment 2nd Ed. Appleton & Lange 1995. p. 242-243.

Contact Lens Spectrum, Issue: December 2009