title: Visual failure caused by vitamin B12 deficiency optic neuropathy.
abstract: Optic neuropathy is a rare but recognised complication of vitamin B12 deficiency, which may proceed to visual failure if not diagnosed early enough. Clues to the possible diagnosis include a history of, or risk factors for, pernicious anaemia, or previous resective gastrointestinal surgery.
authors.affiliation: Walton Centre for Neurology and Neurosurgery, Lower Lane, Fazakerley, Liverpool, UK. a.larner@thewaltoncentre.nhs.uk
authors.forename: A J
authors.initials: AJ
authors.lastname: Larner
mesh_terms: D000328:Adult; D000752:Anemia, Pernicious / Q000150:complications; D005260:Female; D006801:Humans; D009901:Optic Nerve Diseases / Q000175:diagnosis* / Q000209:etiology; D012307:Risk Factors; D013997:Time Factors; D014805:Vitamin B 12 / Q000627:therapeutic use; D014806:Vitamin B 12 Deficiency / Q000150:complications*
chemical_list: D014805:Vitamin B 12