Nystagmus refers to involuntary, typically conjugate, often rhythmic oscillations of the eyes. The most common cause of nystagmus in children is infantile nystagmus syndrome (INS). INS presents within the first few months of life and is sometimes accompanied by an ocular condition associated with sensory impairment. Because this condition affects a person throughout life, it is important to und...

We report 3 patients with acquired nystagmus who were treated with eye muscle tenotomy and reat­ tachment. The first patient had acquired pendular nystagmus (APN) associated with multiple sclerosis (MS) and underwent bilateral medial rectus tenoto­ mies and bilateral lateral rectus recessions to cor­ rect exotropia. Eye movements were recorded before surgery, after surgery, and after surgery an...

BACKGROUND Latent nystagmus is a horizontal binocular oscillation that is evoked by unequal visual input to the 2 eyes. It develops primarily in humans with congenital esotropia. OBJECTIVE To investigate the interrelationship between latent and peripheral vestibular nystagmus and their corollary neuroanatomical pathways. METHODS Examination of subcortical neuroanatomical pathways producing ...

BACKGROUND AND OBJECTIVES To analyze the clinical correlation between perverted nystagmus and brain magnetic resonance imaging (MRI) abnormal findings and to evaluate whether perverted nystagmus is clinically significant results of brain abnormal lesions or not. SUBJECTS AND METHODS We performed medical charts review from January 2008 to July 2014, retrospectively. Patients who were suspected...

Saccades, including fast phases of nystagmus, disappear during drowsiness and non-rapid eye movement (NREM) sleep, but are present during the alert state and REM sleep. The purpose of this study was to determine whether spontaneous nystagmus is present in patients with vestibular neuritis during REM sleep. Eight patients with spontaneous nystagmus due to vestibular neuritis and eight control pa...

The presence of nystagmus differentiates a high cervical cord and brainstem lesion in quadriplegic patient.

The functional status of the velocity storage mechanism was studied in patients at long-term follow-up (2 to 4 years) after unilateral vestibular neurectomy. The time constant of the vestibulo-ocular reflex (VORtc), the effect of head tilt on postrotatory nystagmus, optokinetic after-nystagmus (OKAN), and nystagmus after rapid head shaking were studied in 10 patients. In agreement with previous...

The aim of this investigation was to view characteristics of vestibular nystagmus (spontaneous, latent, and positional) through Frenzel's spectacles in patients with asymptomatic cerebrovascular disease (ACVD), with the intent of providing an early diagnosis and appropriate prophylaxis. We examined a total of 228 men (mean age, 48.04 +/- 7.8 years), a mean group of 150 men with proven asymptoma...

Matthew J. Thurtell, MBBS Konrad P. Weber, MD G. Michael Halmagyi, MD A 40-year-old female migraineur reported intermittent unsteadiness with headache. On examination, she had gaze-evoked horizontal-torsional nystagmus that was also evident during pursuit (video). Nystagmus recordings showed increasing-velocity slow phases typical for congenital nystagmus (CN) (figure 1). A relative subsequentl...

Visual suppression of vestibulo-ocular reflexes (induced vestibular nystagmus) differs between normal subjects and patients with various neurological disorders. Abnormalities of VOR suppression were associated consistently with abnormalities of the visual and/or vesitibular oculomotor reflexes and in particular with abnormal smooth pursuit eye movements in the direction of abnormal suppression....