• See-saw nystagmus has been seen with tumors of the parasellar region and diencephalon, brain-stem vascular lesions, syringobulbia, and after trauma. We report see-saw nystagmus in an adult with a Chiari malformation that was diagnosed by magnetic resonance imaging and confirmed intraoperatively. This patient's condition improved after surgical decompression. An association between see-saw nystagmus and Chiari malformation is potentially important because early diagnosis and decompression may improve neurologic function and prevent further deterioration.
Carol F. Zimmerman, E. Steve Roach, B. Todd Troost. See-saw Nystagmus Associated With Chiari Malformation. Arch Neurol. 1986;43(3):299–300. doi:10.1001/archneur.1986.00520030085024