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 کاملOptic flow induced nystagmus.
A new form of nystagmus is described in this paper: optic flow induced nystagmus (OFN). Optic field flow, for example when driving or viewing films on a large screen, triggered non-fatiguable upbeat nystagmus. This type of nystagmus could not be induced by vestibular stimuli, positioning, or self motion. The aetiology and anatomical correlate of OFN remains unknown. Treatment with gabapentin su...
متن کاملLithium-induced downbeat nystagmus
We report the case of a 76-year old lady under lithium carbonate for a bipolar disorder who presented with a suspected optic neuritis. A typical lithium-induced downbeat nystagmus was observed. Discontinuation of lithium therapy resulted in frank improvement in visual acuity and disappearance of the nystagmus.
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ژورنال
عنوان ژورنال: Indian Pediatrics
سال: 2018
ISSN: 0019-6061,0974-7559
DOI: 10.1007/s13312-018-1451-9