Posterior Embryotoxon on Slit Lamp Ocular Examination Posterior embryotoxon is a prominent and anteriorly displaced Schwalbe line commonly associated with Axenfeld Rieger'syndrome but may be present in up to 15% of the normal population. Dr. Sebastian Vega @oftalmopo #Posterior #Embryotoxon #Ocular #PhysicalExam #clinical #video #ophthalmology #SlitLamp