vertical and horizontal nystagmus, poorly sustained; cogwheel pursuit; arcuate dysmetric movement; normal saccades
2-11-80: Pt seen at JHH with David Zee. Sx began 10-12 yrs ago with vertigo on defecation, hearty laughing, sneezing, or with anger. Devel an ataxic gait. Increasing recently. Diagnosis mad of Arnold Chiari on basis of myelogram and pt had a decompression which relived the SX on sneezing etc but did not change the unsteadiness. Exam of eyes shows Hz nyst. And less conspic. vert. nyst. VIDEO. Case will be pres. by Dr. Zee at Boston.
Arnold Chiari Malformation
David G. Cogan, MD (1908-1993), Former Director of Ophthalmology, National Eye Institute
U.S. Department of Health and Human Services. National Institutes of Health. National Eye Institute