An abnormal Hirschberg test demonstrating esotropia via In Bruckner Testing we are using the reflex of light from the retina to determine if the patient is using both eyes equally to focus and process visual information.  Hirschberg Testing also uses a light reflex to screen for asymmetry in ocular performance, but that’s where the similarities end.  Instead of a retinal light reflex, the Hirschberg Test assesses...