Akira Nakamura

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OBJECTIVES We previously developed a new method for estimating objective visual acuity by means of pattern visual evoked potentials (PVEP). In this study, this method was applied to the diagnosis of malingering. MATERIALS AND METHODS Six patients ranging in age from 40 to 54 years (mean 47 years) with suspected malingering were evaluated by means of the(More)
PURPOSE We previously developed a new method for estimating objective visual acuity by means of pattern visual evoked potentials (PVEP). In this study, this method was applied to the evaluation of visual acuity of 0.05 and 0.01. METHODS Ten subjects with visual acuity of 0.05 and ten normal subjects with visual acuity of 0.01 were examined. The visual(More)
The multifocal VEPs (mfVEPs) obtained from the right and left eyes are practically identical in shape and amplitude, however small differences in the implicit times (ITs) have been reported. We have analyzed the ITs in detail to show that they are dependent on the radial location of the stimulus in the visual field. The differences are large, up to 8.3 ms,(More)
The current case involved a 59-year-old woman who was referred to our hospital with bilateral optic nerve abnormality and gradually progressive bilateral inferior visual field defects. An ophthalmological examination revealed superficial optic nerve head drusen (ONHD) and bilateral inferior altitudinal hemianopsia, but no intracranial lesions. The results(More)
  • Bendschneider D, Tornow Rp, Horn Fk, Roessler Cw, Juenemann Ag, Kruse Fe +8 others
  • 2011
nerve fiber layer thickness in normals measured by spectral domain OCT.fractive error and optic disc parameters on the sensitivity and specificity of scanning laser po-larimetry. Association of retinal nerve fibre layer thickness measured by confocal laser opthalmolscompy and optical coherence tomog-raphy with disk size and axial length. Br J Ophthal-mol(More)
We investigated to measure the objective visual acuity using pattern visual evoked potentials (PVEP) to help the diagnosis with psychogenic visual loss (PVL) who ranged in age from 7 to 14 years old. Pattern stimuli consisted of black and white checkerboard patterns (39, 26, 15 and 9') with a visual angle of 8 degrees and a contrast level of 15%. The(More)
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