The electronystagmographic auditory brainstem response and magnetic resonance imaging findings for a 33-year-old male with a 3.5 cm left vestibular schwannoma are presented. Of particular interest was the presence of an unusual positioning nystagmus following the Dix-Hallpike maneuver in the right head-hanging position. The patient demonstrated a nystagmus that was immediate in onset and not fa...

OBJECTIVE To test the hypothesis that the extraocular muscles (EOMs) of patients with infantile nystagmus have muscular and innervational adaptations that may have a role in the involuntary oscillations of the eyes. METHODS Specimens of EOMs from 10 patients with infantile nystagmus and postmortem specimens from 10 control subjects were prepared for histologic examination. The following varia...

THERE ARE TWO FORMS OF LATERAL SEMICIRCULAR CANAL BENIGN PAROXYSMAL POSITIONAL VERTIGO: geotropic and apogeotropic. When the pathophysiological mechanism of the apogeotropic form is that of canalolithiasis, we can observe a transformation from an apogeotropic nystagmus into a geotropic one. Usually, this phenomenon happens simultaneously on both sides, thus enabling us to observe a right-beatin...

Introduction. Laurence-Moon-Biedl (LMB) syndrome is a rare autosomal-recessive ciliopathy with manifold symptomatology. The cardinal clinical features include retinitis pigmentosa, obesity, intellectual delay, polydactyly/syndactyly, and hypogenitalism. In this paper, the authors report on three siblings with Laurence-Moon-Biedl syndrome associated with a probable pseudocycloid form of congenit...

The Southern California Sensory Integration Test results of 109 learning-disabled children were reviewed and analyzed to investigate the hypothesis that learning-disabled children with excessive postrotary nystagmus durations display greater neuropsychological impairment than learning-disabled children with normal or depressed postrotary nystagmus. The findings supported the hypothesis that lea...

PURPOSE To investigate nystagmus and other visual system abnormalities among children exposed to opiates and benzodiazepines in utero. METHODS Retrospective case series comprising clinical examination and case note review of 25 children with nystagmus and reduced vision who were exposed to controlled drugs during pregnancy. RESULTS Twenty-four children were exposed to opiates, of whom 13 we...

for morbid obesity. In the subsequent 4 months, he suffered from recurrent and intense vomiting, losing 40 kg. Asymptomatic hypokalemia and hypomagnesemia were discovered and supplemented. At this time, systematic oral vitamin therapy was begun. One month later, he started to describe blurred vision and vertical oscillopsia. Neurological examination revealed ataxia and nystagmus. Standard biolo...

This study explores the effect of a program of sensory integration therapy, with emphasis on vestibular stzmulation actzvities, on the duration of postrotary nystagmus zn three learning-disabled children. The single-subject methodology employed allowed a more individualistic and longitudinal investigation of nystagmus patterns in the three subjects. The graphic and statistical analysis of the d...

Superior Semicircular Canal Syndrome (SSCS) or Dehiscence is a rare abnormality in the medical field form of balance disturbance vertigo caused by loud noises changes pressure causing rupture roof superior semicircular canal. SSCS was first described Lloyd Minor 1998 after more than 70 years since Tullio and Hennebert discovered phenomenon, condition which nystagmus triggered noises, nystagmus,...

Manifest latent nystagmus (MLN) was identified in 31 patients by accurate eye movement records. All the patients had horizontal tropias, and the nystagmus fast phases were always in the direction of viewing eye. The slow phases of MLN are decreasing-velocity exponentials while those of the jerk form of congenital nystagmus (CN) are increasing velocity exponentials. Several subjects who were bel...