๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Pattern electroretinogram and visual evoked cortical potential in ethambutol optic neuropathy

โœ Scribed by Yonetsugu Kakisu; Emiko Adachi-Usami; Atsushi Mizota

Publisher
Springer-Verlag
Year
1987
Tongue
English
Weight
321 KB
Volume
67
Category
Article
ISSN
0012-4486

No coin nor oath required. For personal study only.

โœฆ Synopsis

Forty-one eyes in 21 cases of ethambutol optic neuropathy were investigated for the pattern visual evoked cortical potential (VECP) and the pattern electroretinogram (ERG).

In 21 of the eyes the disappearance VECP responses were not detectable. In the other 20 eyes the peak latency and amplitude of the disappearance VECP were delayed and decreased significantly compared with normal eyes. The recovery of the peak latency of the disappearance VECP in ethambutol optic neuropathy was faster than that of the amplitude.

Twelve eyes in six patients were studied by pattern reversal ERG. Though the mean peak latency of the pattern ERG was within normal limits, the mean amplitude was decreased significantly.

Our investigations indicated that ethambutol optic neuropathy disturbed not only the optic nerve but also the retina.

๐Ÿ“œ SIMILAR VOLUMES

Luminance-unbalanced pattern onset-offse
Luminance-unbalanced pattern onset-offset electroretinogram and visual evoked cortical potential
โœ Masaru Yoshii; Kenji Yanashima; Tetsuo Kawara; Fukumi Nozawa; Shigekuni Okisaka ๐Ÿ“‚ Article ๐Ÿ“… 1991 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 312 KB

The effects of a luminance-unbalanced pattern onset-offset mode of stimulation on electroretinograms and visual evoked cortical potentials were investigated. With the use of originally devised software, only offset luminance was varied from 14.7 to 62.3 cd/m 2. A vertical grating pattern (1.5 c/deg,

Electroretinograms and pattern visually
Electroretinograms and pattern visually evoked cortical potentials in central areolar choroidal dystrophy
โœ E. Adachi-Usami; K. Murayama; Y. Yamamoto ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 337 KB

We describe three patients with central areolar choroidal dystrophy whose electroretinograms (ERGs) and pattern visually evoked cortical potentials (VECPs) confirmed their macular dysfunction. Visual fields measured by Goldmann perimetry showed central relative scotomata corresponding to a dystrophi

Pattern visual evoked potentials and pat
Pattern visual evoked potentials and pattern electroretinograms in hypothyroidism
โœ Graham E. Holder; John R. Condon ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 236 KB

This study reports the pattern visual evoked potential (PVEP) findings in 10 patients with idiopathic hypothyroidism. Eight of these patients also had pattern electroretinography (PERG) performed and six were additionally seen after treatment with thyroxine. Only one patient had definitely abnormal

Abnormality of the pattern electroretino
Abnormality of the pattern electroretinogram and pattern visual evoked cortical response in esotropic cats
โœ M. L. Devlin; J. L. Jay; J. D. Morrison ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 701 KB

In six 3-week-old kittens, the tendon of the lateral rectus muscle of one eye was sectioned under anaesthesia in order to induce an esotropic (nasally-directed) squint. At maturity, the pattern electroretinogram (PERG) and pattern visual evoked response (PVER) were recorded under anaesthesia to phas

Comparison of automated perimetry and pa
Comparison of automated perimetry and pattern visually evoked cortical potentials in optic neuritis
โœ N. Fujimoto; E. Adachi-Usami ๐Ÿ“‚ Article ๐Ÿ“… 1988 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 301 KB

Twenty-one eyes of thirteen patients suffering from optic neuritis were examined with the Octopus automated perimeter and pattern visually evoked cortical potentials. All eyes had visual acuity of 0.2 or better. Visual field examination was measured by program 31 or 33, which tests the central 30-de