(A) Fundus photographs at the initial ocular manifestation showing edema and hyperemia of bilateral optic discs, tortuosity and engorgement of retinal vessels, and macular star-shaped exudation in the left eye. (B) Fluorescein angiography showing dye leakage at bilateral optic discs. (C) Optical coherence tomography showing bilateral disc edema and swelling of peripapillary nerve fiber layers. (D) Visual field testing showing enlarged blind spots, central and paracentral scotomas, and superior and inferior arcuate defects. OD = right eye; OS = left eye.