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Fluorescein angiography in nonarteritic anterior ischemic optic neuropathy in young patients (NAIONy) segmental. Left, Fundus photograph showing diffuse optic disc edema. Middle, Fluorescein angiogram, early arteriovenous phase, showing poor filling of optic disc with relatively spared segmental region of early filling (arrows) at 15.3 seconds. Right, Fluorescein angiogram, late phase, showing late leakage from optic disc at 300.6 seconds.
