11/13. optic disk vasculitis.A 44-year-old woman developed progressive loss of vision associated initially with a swollen optic disk, and later with optic atrophy and a diffuse retinal vasculopathy, which caused extensive retinal hemorrhagagic. Histopathologic examination showed hemorrhagagic infarction of the retina, as well as infarction of the anterior optic nerve. In the optic nerve, the central retinal vessels showed extensive phlebitis and occlusion of many small arterioles.- - - - - - - - - - ranking = 1keywords = arteriole (Clic here for more details about this article) |
12/13. blindness secondary to steroid injections into the nasal turbinates.Two cases of inadvertent intra-arterial injection into the anterior turbinates for treatment of allergic rhinitis resulted in retrograde flow of methylprednisolone acetate in the ophthalmic artery. Both patients demonstrated embolization of the retinal circulation, and one of the choroidal circulation as well. Visual outcome was favorable, although one patient showed a permanent paracentral scotoma. Fundus photographs clearly showed intra-arterial obstruction of arterioles that cleared within several days. Precautions can be taken for the prevention of this complication.- - - - - - - - - - ranking = 1keywords = arteriole (Clic here for more details about this article) |
13/13. Retinopathy in systemic lupus erythematosus.A 32-year-old black woman with systemic lupus erythematosus went rapidly blind due to severe bilateral retinal vasculitis. The mechanism appeared to be total arrest of the retinal circulation by thrombosis of most of the retinal vasculature including major arterioles.- - - - - - - - - - ranking = 1keywords = arteriole (Clic here for more details about this article) |
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