نتایج جستجو برای: multifocal visual evoked potential
تعداد نتایج: 1436626 فیلتر نتایج به سال:
PURPOSE To examine the effects on the amplitude and latency of the multifocal visual evoked potential (mfVEP) in retinal diseases associated with depressed multifocal electroretinograms (mfERG). METHODS Static automated perimetry (SAP), mfERGs, and mfVEPs were obtained from 15 individuals seen by neuro-ophthalmologists and diagnosed with retinal disease based on funduscopic examination, visua...
OBJECTIVE To report the subjective and objective improvement in vision in a patient with autosomal dominant retinitis pigmentosa after transplantation of a sheet of fetal neural retina together with its retinal pigment epithelium. DESIGN A sheet of fetal neural retina with its retinal pigment epithelium was transplanted into the subretinal space under the fovea unilaterally in a patient with ...
Background To review the multifocal visual evoked potential (mfVEP) technique and to illustrate its use in neuroophthalmology. Methods Monocular mfVEP recordings were obtained from both eyes. The display, 44.5° in diameter, contained 60 sectors. Each sector was a pattern-reversing checkerboard. Probability plots, analogous to the probability plot of the Humphrey Visual Field (HVF) Analyzer, wer...
PURPOSE To investigate the test-retest variability of multifocal visual evoked potential (mfVEP) and threshold perimetry in glaucoma, and to examine the relationship between the two techniques. METHODS Data were recorded using the AccuMap mfVEP and SITA standard program of the Humphrey Field Analyzer. Data were obtained twice within a 4-week period from both eyes of 74 patients with varying a...
PURPOSE To analyze the retinal symmetry of multifocal visual evoked potential (mfVEP) in both eyes of normal subjects. METHODS The monocular mfVEP in both eyes of 36 normal subjects (72 eyes) were tested with VERIS Science 4.0. The stimulus was the pattern reversal dart array consisted of 60 sectors, each included 16 black-white reverse patterns. The visual stimulation was controlled by a bin...
INTRODUCTION The gold standard in functional glaucoma evaluation is standard automated perimetry (SAP). However, SAP depends on the reliability of the patients' responses and other external factors; therefore, other technologies have been developed for earlier detection of visual field changes in glaucoma patients. The frequency-doubling perimetry (FDT) is believed to detect glaucoma earlier th...
The aim of this study was to investigate the acute effects of ethanol administration on pattern-reversal visual evoked potential (VEP) and multifocal electroretinography (mfERG). Fifteen healthy subjects with no ocular or general disease were recruited. VEP (0.25° pattern sizes) and mfERG with 19 elements in two recording segments were performed before ethanol administration to obtain baseline ...
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