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SEE‐SAW NYSTAGMUS
Author(s) -
WILLIAMS ISLA M.,
DICKINSON PAMELA,
RAMSAY ROBERT J.,
THOMAS LEIGH
Publication year - 1982
Publication title -
australian journal of opthalmology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.3
H-Index - 74
eISSN - 1442-9071
pISSN - 0310-1177
DOI - 10.1111/j.1442-9071.1982.tb01029.x
Subject(s) - zona incerta , eye movement , thalamus , pons , fixation (population genetics) , neuroscience , lesion , anatomy , electrooculography , nystagmus , medicine , psychology , audiology , surgery , population , environmental health
See‐saw ocular movements are described in two patients, one having obstructive hydrocephalus and the other a thalamic infarct. Electro‐oculographic studies demonstrated that the eye movements in patient 1 moved in and out of phase at irregular intervals, in both a horizontal and a vertical direction. the dysconjugate eye movements were exaggerated in bright light and less evident during fixation. We suggest a lesion impairing the function of that circuitry of cells thought to include the nucleus centromedianus of the thalamus, the zona incerta, the interstitial nucleus of Cajal and eye movement related cells in the mid brain and pons, causes the dysconjugate eye movements but that the controlling influence of multiple connections with other parts of the brain results in the ever changing pattern of dysconjugate eye movement.