• Optic nerve sign is represented by dilated capillaries that can be visualized in the nerve using fluorescein angiography. (wikipedia.org)
  • Here, we report the first published fluorescein angiography (FA) study of a morning glory optic nerve in a patient with Aicardi syndrome and contralateral persistent fetal vasculature (PFV). (nih.gov)
  • Fluorescein angiography of the eye showed and late staining in the areas of ellipsoid chorioretinal lacunae emanating from the optic nerve and extensive peripapillary staining and late leakage of the optic nerve. (nih.gov)
  • Insert the needle and draw the patient's blood to the hub of the syringe so that a small air bubble separates the patient's blood in the tubing from the fluorescein. (nih.gov)
  • If the needle has extravasated, the patient's blood will be seen to bulge the skin and the injection should be stopped before any fluorescein is injected. (nih.gov)