NEUROMYELITIS-OPTICA

An 11-year-old girl developed sudden visual loss in her left eye, prec eding subacute myelitis by 9 months. Multifocal lesions in the central nervous system were demonstrated by magnetic resonance imaging. Altho ugh unilateral blindness is unusual, the clinical findings predominant ly involving the optic nerve and spinal cord were consistent with the diagnosis of neuromyelitis optica (NMO). This case provides additional evidence to support the view that NMO is a variant of multiple sclero sis.