title: The chiasmal enigma.
mesh_terms: D000818:Animals; D002536:Cerebral Arteries / Q000473:pathology; D000882:Haplorhini; D006801:Humans; D008251:Macaca; D009474:Neurons / Q000473:pathology; D009897:Optic Chiasm / Q000098:blood supply / Q000473:pathology; D009900:Optic Nerve / Q000473:pathology; D009901:Optic Nerve Diseases / Q000209:etiology* / Q000473:pathology; D010911:Pituitary Neoplasms / Q000150:complications*; D012607:Scotoma / Q000209:etiology* / Q000473:pathology