منابع مشابه
Congenital hereditary vertical nystagmus.
Duke-Elder (1949) states that congenital nystagmus varies considerably in extent, direction, and rapidity of the movements. In most cases it affects both eyes equally, but in a few instances it is uniocular. Typically the movements are pendular in type, horizontal in direction, and do not alter on lateral deviation, although they may then become jerky in type. Sometimes the movement is coarser ...
متن کاملUnilateral vertical nystagmus: the Heimann-Bielschowsky phenomenon.
OBJECTIVE To present clinical feature of Heimann-Bielschowsky phenomenon and strabismus association. DESIGN Retrospective case series. MATERIAL AND METHOD Medical records of cases between January 2004 and January 2008 were reviewed. Eight cases met the criteria. Age, sex, visual acuity, and eye examination data were collected. RESULTS Six cases were male and two cases were female. Age at ...
متن کاملVertical nystagmus: clinical facts and hypotheses.
The pathophysiology of spontaneous upbeat (UBN) and downbeat (DBN) nystagmus is reviewed in the light of several instructive clinical findings and experimental data. UBN due to pontine lesions could result from damage to the ventral tegmental tract (VTT), originating in the superior vestibular nucleus (SVN), coursing through the ventral pons and transmitting excitatory upward vestibular signals...
متن کاملAbnormal vertical optokinetic nystagmus in infants and children.
AIMS To determine if testing vertical optokinetic nystagmus (VOKN) has a role in the clinical assessment of infants and children. METHODS A large field projection system was developed with which optokinetic nystagmus (OKN) could be stimulated in any direction. Gross abnormalities in the response were detected simply by observation. RESULTS VOKN was tested in 144 children using this OKN proj...
متن کاملVertical acquired pendular nystagmus: oculomotor findings, localizing value and pathophysiology
OBJECTIVES: Evaluation of the localizing value and pathogenesis of vertical APN through examination of patients with this nystagmus form and different diagnosis. DESIGN: Three patients with vertical APN with different diseases (brainstem infarct, brainstem encephalitis and brainstem haemorrhage), but with similar topic of lesions, are presented. For registration of the nystagmus AC-electrooculo...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society of Medicine
سال: 1931
ISSN: 0035-9157
DOI: 10.1177/003591573102400334