Indocyanine green versus fluorescein angiography in the differential diagnosis of arteritic and nonarteritic anterior ischemic optic neuropathy.

Purpose:We evaluated in a prospective study the usefulness of indocyanine green (ICG) versus fluorescein angiography in the differential diagnosis between arteritic and nonarteritic anterior ischemic optic neuropathy (AION).Methods:Simultaneous ICG and fluorescein angiography was performed on 22 eye