title: Electroencephalogram, electroretinogram and visual evoked potentials studies in ophthalmoplegia plus.
mesh_terms: D000293:Adolescent; D002648:Child; D006327:Heart Block / Q000503:physiopathology*; D006801:Humans; D009886:Ophthalmoplegia / Q000503:physiopathology*; D012174:Retinitis Pigmentosa / Q000503:physiopathology*