Many causes: There are a large number of causes of sudden blindness. Here, i assume that you mean total vision loss of one eye. Causes include a retinal artery occlusion, giant cell arteritis, retinal detachment, ischemic optic neuropathy, stroke, optic neuritis, acute glaucoma, vitreous hemorrhage, poisoning (methyl alcohol), and trauma. Bilateral loss is rare: occipital stroke, pituitary apoplexy.
Answered 11/5/2018
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