_:vb50956154 "url:http://en.wikipedia.org/wiki/Neuromyelitis_optica"^^ . _:vb50956154 . _:vb50956154 . _:vb50956154 . _:vb50956154 "url:http://rarediseases.org/rare-diseases/neuromyelitis-optica/"^^ . _:vb50956154 . _:vb50956154 "A central nervous system disease characterized by inflammation of the optic nerve (optic neuritis) and inflammation of the spinal cord (myelitis)."^^ . _:vb50956154 . _:vb50956154 .