title: Two additional scenarios for see-saw nystagmus: achiasma and hemichiasma.
abstract: The discovery of canine achiasma and hemichiasma has been followed by the identification of human achiasma (four individuals, to date). See-saw nystagmus was present in all cases of achiasma (canine and human) and in one of two cases of canine hemichiasma studied. Human infants with see-saw nystagmus should be imaged for possible structural abnormalities of the optic chiasm.
authors.affiliation: Ocular Motor Neurophysiology Laboratory, Veterans Affairs Medical Center, Cleveland, OH 44106, USA.
authors.forename: L F
authors.initials: LF
authors.lastname: Dell'Osso
authors.forename: R B
authors.initials: RB
authors.lastname: Daroff
mesh_terms: D000818:Animals; D004285:Dogs; D005124:Eye Abnormalities / Q000150:complications*; D006801:Humans; D009759:Nystagmus, Pathologic / Q000209:etiology*; D009897:Optic Chiasm / Q000002:abnormalities*; D014786:Vision Disorders / Q000209:etiology