title: Echographic features of tilted optic disk.
abstract: Unusual echographic features of the optic nerve were observed in four cases of tilted disk syndrome. A-scan ultrasonography revealed an increase in the dural diameter of the optic nerve (average, 8.5 microseconds), and B-scan ultrasonography showed an accentuation and doubling of optic nerve outline, which is a feature of optic neuropathy. The probable cause for these echographic features is the abnormal configuration of the nerve.
mesh_terms: D005451:Fluorescein Angiography; D006801:Humans; D009898:Optic Disk / Q000002:abnormalities* / Q000473:pathology; D009900:Optic Nerve / Q000473:pathology; D012857:Situs Inversus / Q000473:pathology / Q000503:physiopathology*; D014463:Ultrasonography / Q000379:methods