The aim of this paper is to present for the first time the functional evaluation of each of the vestibular receptors in the six semicircular canals in a patient diagnosed with Meniere's disease during an acute attack. A 54-year-old lady was diagnosed with left Meniere's disease who during her regular clinic review suffers an acute attack of vertigo, with fullness and an increase of tinnitus in ...

Objectives We retrospectively evaluated a chart review of 3,525 patients for any acute disturbance. A total 1,504 with vestibular syndrome (AVS) received an instrumental assessment within 72 h from the onset symptoms using simultaneously combination ocular vestibular-evoked myogenic potential (oVEMPs), cervical (cVEMPs), video head-impulse test (vHIT), and subjective visual vertical (SVV) were ...

AIM To analyse nystagmus characteristics in patients with congenital stationary night blindness (CSNB) for differentiation from other forms of early childhood nystagmus. METHODS Horizontal and vertical eye movements of 10 patients (6-46 years, mean 17.1 years, median 12.5 years) with CSNB (eight with CSNB1, two with CSNB2) were recorded with the scleral magnetic search coil technique or by el...

Downbeat nystagmus (DBN), the most common form of acquired fixation nystagmus, is often caused by cerebellar degeneration, especially if the vestibulo-cerebellum is involved. The upward ocular drift in DBN has a spontaneous and a vertical gaze-evoked component. Since cerebellar involvement is suspected to be the underlying pathomechanism of DBN, we tested in 15 patients with DBN whether the app...

PURPOSE The aim of this study was to describe the clinical features and video-oculographic findings in patients with anterior semicircular canal benign paroxysmal positional vertigo (BPPV). MATERIALS AND METHODS STUDY DESIGN This is a prospective case series. SETTING The study was set at an outpatient clinic in a general hospital. PATIENTS Fourteen individuals with symptoms of BPPV and...

DEFINITIONS Gaze-evoked Gaze-evoked nystagmus (GEN) is a jerk nystagmus, not present in primary position, elicited by attempted maintenance of eccentric eye position, GEN may have a linear or a decreasing-velocity exponential slow phase; the latter has sometimes been referred to as gaze-paretic nystagmus but, unless it is due to a muscle or nerve paresis, the GEN terminology is preferred. Disti...

AIM To indicate that congenital idiopathic nystagmus (CIN) and sensory defect nystagmus (SDN) can be vertical or asymmetric in some children. METHODS Of 276 children presenting with nystagmus for electrophysiological testing, 14 were identified as having CIN or SDN, yet had a nystagmus which was either vertical (n=11) or horizontal asymmetric (n=3). Flash electroretinograms and flash and patt...

Background: Pharmacological treatment has been successful in some forms of acquired neurological nystagmus. However, drugs are not known to be effective in idiopathic infantile nystagmus or nystagmus associated with ocular diseases. Methods: The authors retrospectively analysed Snellen visual acuity (VA), subjective visual function, and eye movement recordings of 23 patients with nystagmus (13 ...

purpose: to determine the effect of photorefractive keratectomy (prk) on improvement of involuntary eye movements and visual functions in myopic patients with congenital nystagmus. methods: this prospective interventional case series included patients with congenital nystagmus and myopia ≥ -1 d who underwent prk over a 2-year period. complete ophthalmological examinations including visual acuit...