Yoshiaki Ichibe

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Two patients with migraine and repetitive visual field defects of homonymous hemianopic type are reported. The visual field defects were confirmed by Goldmann perimetry and automated static perimetry. Neither computed tomography nor magnetic resonance imaging showed abnormal findings. Decreased cerebral blood flow at the left basal ganglion area was the(More)
Purpose: To evaluate the pupil response to chromatic light stimulation in patients with age-related macular degeneration (AMD). Methods: Twenty-one patients with asymmetric AMD, ranging in age from 60 to 83 years (mean age, 71.9 years), were enrolled in the present study. In the healthy eye, the fundus, visual acuity, and visual field were normal(More)
PURPOSE To evaluate the effect of motion stimulation without changing binocular disparity on stereopsis in strabismic patients. METHODS Static and moving stereopsis were measured in 120 normal children and 30 strabismic patients (9 esotropia, 14 exotropia, 7 intermittent exotropia). Using a portable game device (PSP; SONY, Japan), we created stereoscopic(More)
PURPOSE To investigate the etiology of bilateral disc swelling in Japanese. METHODS Using Kitasato University's Department of Neuro-Ophthalmology medical records and fundus photographs of the period December 1977 through November 2010, we retrospectively identified 121 outpatients who had been initially confirmed with bilateral disc swelling. RESULTS(More)
Background: The waveforms of the pupillary light reflex (PLR) can be analyzed in a diagnostic test that allows for differentiation between disorders affecting photoreceptors and disorders affecting retinal ganglion cells, using various signal processing techniques. This procedure has been used on both healthy subjects and patients with age-related macular(More)
—This paper examines the possibility of detecting 2 conditions which cause vision to deteriorate: Aged-Related Mac-ular Degeneration (AMD), and the effects of aging on eyes using the features of PLR waveforms. These features were extracted using Fourier descriptors of PLR waveform shapes, weighted amplitudes of the waveforms, and a balanced combination of(More)
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