title: Sudden visual loss secondary to an orbital varix.
abstract: A 45-year-old man presented with precipitous loss of vision and rapidly changing field defects in one eye. Computerized tomography and B-scan ultrasonography revealed a small orbital mass adjacent to the optic nerve. This was removed via lateral orbitotomy. On pathologic examination it was diagnosed as a small orbital varix. Drs. Frederick C. Blodi and Stephen Trokel comment on the case.
mesh_terms: D005094:Exophthalmos; D006801:Humans; D008297:Male; D008875:Middle Aged; D009915:Orbit / Q000098:blood supply* / Q000473:pathology; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography; D014648:Varicose Veins / Q000151:congenital* / Q000175:diagnosis / Q000473:pathology; D014786:Vision Disorders / Q000209:etiology*