Abstract Background Parinaud’s syndrome, also known as dorsal midbrain is characterized by a combination of signs, including upgaze palsy, convergence–retraction nystagmus, eyelid retraction and pupillary dissociation. It caused pretectal or tegmental lesions upper brainstem. Miller Fisher the triad ataxia, areflexia ophthalmoplegia, has rarely been reported to present syndrome in adults. To ou...