Results 251 to 260 of about 447,001 (304)
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Effect of ocular fixation on positional nystagmus in BPPV patients
International Journal of Audiology, 2022The quantitative suppression rate of positional nystagmus (PN) by ocular fixation (OF) is unknown. This study aims to analyse the effect of OF on the slow phase velocity (SPV) of PN during diagnostic positional manoeuvres (DPMs) with videonystagmography in patients with benign paroxysmal positional vertigo (BPPV).DPMs were performed on 58 patients with
Halil Erdem Özel +5 more
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The Effect of Ocular Fixation on the Caloric Nystagmus
ORL, 2010The effect of fixation and nonfixation upon the caloric nystagmus was studied in 30 normal volunteers. All four nystagmus parameters (frequency, slow phase velocity, amplitude, and duration) were analyzed and statistically evaluated. This information in normals is essential to comprehend certain nystagmic observations suspected to have pathognomonic ...
E M, Molnar, N, Torok
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Ocular fixation with quadriceps tendon allograft
Cell and Tissue Banking, 2002Management of difficult strabismus, such as strabismus fixus and paralytic strabismus, in order to maintain the alignment is complicated. There are many surgical approaches described in the current literature, together with notes on the materials used to stabilize these deformities.
Sorot, Wutthiphan +4 more
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Ocular Motor Fixation Deficits in Friedreich Ataxia
The Cerebellum, 2010Friedreich ataxia (FRDA) is the most common genetic cause of ataxia with a prevalence of approximately 1 in 29,000. Ocular motor abnormalities are common in FRDA and include fixation instability, saccadic dysmetria, and vestibular dysfunction. It has not yet been determined whether aspects of spatial attention, which are closely coupled to eye ...
Hocking, Darren +6 more
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Annals of Otology, Rhinology & Laryngology, 1973
The effects of ocular fixation on normal and pathological nystagmus are reviewed, and in particular the effect of opening the eyes during the caloric test is analyzed. The Ocular Fixation Index of Demanez was applied to the records of 100 patients, and the findings tend to confirm the usefulness of this Index as a means of distinguishing peripheral ...
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The effects of ocular fixation on normal and pathological nystagmus are reviewed, and in particular the effect of opening the eyes during the caloric test is analyzed. The Ocular Fixation Index of Demanez was applied to the records of 100 patients, and the findings tend to confirm the usefulness of this Index as a means of distinguishing peripheral ...
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Ocular fixation and macular integrity by microperimetry in multiple sclerosis
Graefe's Archive for Clinical and Experimental Ophthalmology, 2020To characterize the fixation and macular integrity of subjects with multiple sclerosis (MS) with and without previous optic neuritis (ON) using microperimetry (MP).Fifty-five eyes of MS patients, subdivided into three groups (28 eyes without ON, 16 with previous ON, and 11 eyes with previous ON in the contralateral eye), and 43 healthy eyes were ...
Amparo Gil-Casas +2 more
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Ocular Fixation Abnormality in Patients with Autism Spectrum Disorder
Journal of Autism and Developmental Disorders, 2016We examined the factors that influence ocular fixation control in adults with autism spectrum disorder (ASD) including sensory information, individuals' motor characteristics, and inhibitory control. The ASD group showed difficulty in maintaining fixation especially when there was no fixation target.
Aya, Shirama +3 more
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Ocular fixation, vestibular dysfunction, and visual motion hypersensitivity
Optometry - Journal of the American Optometric Association, 2009A subgroup of individuals with vestibular dysfunction and visual motion hypersensitivity (VMH) become dizzy and imbalanced in response to movement of the visual environment. The purpose of this study was to investigate ocular fixational stability during gaze on a target, with and without visual background movement.
Winkler, Patricia A. +1 more
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Infant responses of ocular fixation to moving visual stimuli
Journal of Experimental Child Psychology, 1976Abstract Infants of 1, 2, and 3 months of age were presented with two checkerboard patterns, one stationary and the other moving in a horizontal oscillatory motion at one of eight rates. An observer who could see only the infant's head and eyes recorded, for each 30-sec trial, (a) the position of first fixation, (b) position of fixation at the end of
F C, Volkmann, M V, Dobson
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Effects of Six Conditions of Ocular Fixation on Caloric Nystagmus
Archives of Otolaryngology - Head and Neck Surgery, 1980Caloric tests were performed on 20 normal volunteers under the following six conditions of ocular fixation: (1) eyes open with lighted +20-diopter lenses; (2) eyes open with lighted +20-diopter lenses plus strobe lighting; (3) eyes open in darkness; (4) eyes closed in darkness; (5) eyes closed in a dimly lighted room; and (6) eyes open with unlighted ...
E A, Karlsen +2 more
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