obsolete_Foster-Kennedy syndrome true Replaced by Mondo term MONDO_0001998, with which this term was previously merged. Use: http://purl.obolibrary.org/obo/MONDO_0001998 MedDRA:10017065 ICD9:377.04 Sirarat Sarntivijai Conditions which produce injury or dysfunction of the second cranial or optic nerve, which is generally considered a component of the central nervous system. Damage to optic nerve fibers may occur at or near their origin in the retina, at the optic disk, or in the nerve, optic chiasm, optic tract, or lateral geniculate nuclei. Clinical manifestations may include decreased visual acuity and contrast sensitivity, impaired color vision, and an afferent pupillary defect. 3.88.0 DOID:14555 SNOMEDCT:87764000 Optic Nerve Diseases ICD10:H47.14 MESH:D009901 http://purl.obolibrary.org/obo/MONDO_0001998