title: Band atrophy of the optic nerve. The histology of temporal hemianopsia.
abstract: Cross sections of the orbital portion of the optic nerve, the decussating fibers of which underwent atrophy, have a distinctive histologic pattern. Distally, from the eyeball to the midportion of the optic nerve, this pattern of atrophy consists of a broad-based nasal and a narrow-based temporal sector that form a horizontal band. Proximally, near the optic canal, the pattern changes. The atrophic bundles occupy the nasal and central portions of the optic nerve only.
mesh_terms: D002340:Carotid Artery Diseases / Q000150:complications*; D005260:Female; D006423:Hemianopsia / Q000150:complications* / Q000473:pathology; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications; D008875:Middle Aged; D009896:Optic Atrophy / Q000150:complications / Q000473:pathology*