[Retraction nystagmus].
D020295:Brain Stem Neoplasms; D006801:Humans; D008636:Mesencephalon; D009369:Neoplasms; D009759:Nystagmus, Pathologic / Q000209:etiology*
MESENCEPHALON/neoplasms; NYSTAGMUS/etiology and pathogenesis
O retrakcním nystagmu.