Visual evoked potentials in relation to visual acuity in macular disease

Negishi, Chisako; Takasoh, Michihiko; Fujimoto, Naoya; Tsuyama, Yoshihiko

doi:10.1034/j.1600-0420.2001.790312.x

Cited by 13 publications

(13 citation statements)

References 19 publications

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“…Bass et al [14] also reported a delay in eyes with macular disease and concluded from their findings that a delay alone should not be used to differentiate between macular and optic nerve disease. In agreement, Ueda [15] and Negishi [16] reported that the pVEPs of patients with macular diseases, e.g., age-related macular degeneration, central serous chorioretinopathy, branch retinal vein occlusion, and branch retinal artery occlusion, were significantly longer and the amplitudes were significantly smaller than that of healthy subjects. They concluded that pVEPs can be of diagnostic value even at the retinal level.…”

Section: Discussionmentioning

confidence: 69%

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Pattern VEPs before and after idiopathic epiretinal membrane removal

et al. 2007

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Pattern visual evoked potentials (pVEPs) were used to assess the visual function before, and 1 and 6 months after removal of an idiopathic epiretinal membrane (ERM) from eight eyes. All patients underwent a standard three-port pars plana vitrectomy to remove the ERM removal and cataract surgery. pVEPs were elicited by check sizes of 15', 30', 60', and 120' with a reversal rate of 2 reversals/s. One hundred responses were averaged with an analysis time of 300 ms. The amplitude ratio (affected eye/fellow eye) of the P100 component were significantly larger at 6 months with smaller check sizes, and the increase was accompanied by an improvement of the VA. The mean peak latency of P100 did not change significantly for all check sizes. We conclude that the improvement of the P100 amplitude with smaller check sizes resulted from the recovery of visual function after the ERM removal.

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Section: Discussionmentioning

confidence: 69%

“…Pattern visual evoked potentials (pVEPs) are used to assess the physiological condition of the visual system in patients with optic nerve [10][11][12] and retinal diseases [13][14][15][16]. In ERM, there are several reports about preoperative changes in pVEPs to predict visual outcome after surgery [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Pattern VEPs before and after idiopathic epiretinal membrane removal

et al. 2007

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“…Several investigators7,9,10 have reported that retinal diseases may cause an increase in the pVEP latency, and the increase was significantly less for eyes with macular diseases than that in eyes with optic neuropathy. Shimada et al10 concluded that the pVEPs appear to be more sensitive for optic nerve diseases than for macular diseases in patients with similar visual acuities.…”

Section: Discussionmentioning

confidence: 98%

Pattern-reversal visual-evoked potential in patients with occult macular dystrophy

Hanazono¹,

Ohde²,

Shinoda³

et al. 2010

OPTH

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Purpose:Occult macular dystrophy (OMD) is a hereditary retinal disease characterized by a normal fundus, normal full-field electroretinograms (ERGs), progressive decrease of visual acuity, and abnormal focal macular ERGs. The purpose of this study was to report pattern-reversal visual-evoked potential (pVEPs) findings in OMD patients.Patients and method:The pVEPs recorded from four patients with OMD (aged 42–61 years; 2 men and 2 women) were reviewed. The visual acuities ranged from 20/200 to 20/30. The amplitudes of the N-75 and P-100 (P2 amplitude) and the latency of the N-75 components (N1 latency) were analyzed.Results:The mean (±SD) P2 amplitude was 2.7 ± 1.9 μV for the 5′, 4.8 ± 2.9 μV for the 10′, 3.2 ± 2.1 μV for the 20′, and 4.4 ± 3.5 μV for the 40′ checkerboard stimuli. The N1 latency was 122.2 ± 6.4 ms for the 5′, 105.0 ± 11.5 ms for the 10′, 97.7 ± 10.0 ms for the 20′, and 91.0 ± 13.7 ms for the 40′ checkerboard stimuli. The mean P2 amplitude was reduced and the N1 latency was delayed in comparison with the laboratory standard for the Keio University Hospital.Conclusions:The delayed latency and reduced amplitude suggest a major contribution of the central cone pathway to the pVEPs.

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“…Therefore, the combined use of the two studies can offer considerable information concerning the integrity of the retina. 96 Leber's congenital amaurosis is a familial disorder that presents with progressive blindness during the first few years of life. It can predispose to night blindness owing to the degeneration of the rods, which are the receptors that function in the low-level light at dusk and at night.…”

Section: Retinal Lesionsmentioning

confidence: 99%

Visual Evoked Potentials in Pediatrics—Abnormal

Goldie¹

2006

Clinical Neurophysiology of Infancy, Childhood, and Adolescence

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The visual evoked potential (VEP) is an objective physiologic measurement of the electrical activation of the visual pathways of the brain that has become a valuable tool in vision research and clinical medicine. Most VEP studies have been performed on the adult and have been used most effectively as a test of optic nerve function. Although the VEP has been most widely used in cases of multiple sclerosis, 1 there are numerous other clinical conditions in which VEPs provide useful information. This chapter concerns the use of the VEP in evaluating the visual system of the infant and young child. Chapter 10 reviews the basic physiology of the developing visual system, particularly as this would relate to the development of the VEP.In this chapter observations about the manner in which the VEPs in children are obtained and interpreted are discussed, and illustrations of their usefulness in different clinical settings are provided. In the first section caveats concerning the techniques and settings used for collecting VEPs in children are given. The latter part of the chapter deals with the utility of the VEP in a variety of disorders affecting the nervous system. First, the usefulness in disorders of development of the visual pathways, in amblyopia ex anopsia, and in compressive lesions of the visual pathways is discussed. Second, the role of VEP in vascularischemic lesions of the visual pathways, metabolic and toxic disorders, demyelinating and dysmyelinating disorders of the developing nervous system, and hypoxicischemic encephalopathy of the premature infant is then reviewed. Finally, clinical issues concerning the use of the VEP in retinal lesions, in occipital infarcts, cortical malformations, and in the setting of dyslexia are discussed.

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Visual evoked potentials in relation to visual acuity in macular disease

Cited by 13 publications

References 19 publications

Pattern VEPs before and after idiopathic epiretinal membrane removal

Pattern VEPs before and after idiopathic epiretinal membrane removal

Pattern-reversal visual-evoked potential in patients with occult macular dystrophy

Visual Evoked Potentials in Pediatrics—Abnormal

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