The correlation of visual evoked potentials (VEP) and visual field indices (Octopus G1) in glaucoma and ocular hypertension

Nykänen, Hannele; Raitta, Christina

doi:10.1111/j.1755-3768.1989.tb01621.x

Cited by 8 publications

(3 citation statements)

References 4 publications

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“…There was a good significant negative correlation of P100 latency and MD and a significant relationship of N155 latency and P100 duration. This finding of significant correlation between the values of MD and those of VEP parameters is consistent with the results reported in other studies in which abnormal VEP responses were related to visual field defects assessed by Goldmann perimetry [ 2 , 11 , 13 , 25 , 26 ], or by static perimetry [ 11 , 13 ]. Our results are also in close agreement with a recent study [ 23 ] which has documented that the MD values in POAG patients were negatively correlated with the latency time of P100, which also corroborates the findings of previous workers [ 17 ].…”

Section: Challenges In the Pastsupporting

confidence: 92%

“…Mean defect (MD) indicative of diffuse nonspecific nerve fibre loss correlated significantly ( P < 0.05) in eyes with OAG in a previous study [ 11 ] where Flash evoked responses and the visual field indices (VFI) of the Octopus G1 program were recorded from 42 eyes of 21 patients, out of which 29 eyes had open-angle glaucoma (OAG) and 10 had ocular hypertension (OH).…”

Section: Challenges In the Pastmentioning

confidence: 96%

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Significance of Visual Evoked Potentials in the Assessment of Visual Field Defects in Primary Open-Angle Glaucoma: A Review

Kothari

Bokariya

Singh

et al. 2013

Neuroscience Journal

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Visual evoked potentials is an important visual electrophysiological tool which has been used for the evaluation of visual field defects in primary open-angle glaucoma and is an appropriate objective measure of optic nerve function. Significant correlations between the magnitude of the VEP parameters and MD of Humphrey static perimetry suggest that the impaired visual cortical responses observed in glaucoma patients can be revealed by both electrophysiological and psychophysical methods. In addition, the severity of global glaucomatous damage evidenced by reduction in MD could depend on the delay in neural conduction from retina to the visual cortex as revealed by the significant correlation between VEP latencies and MD which also supports the validity of the VEP testing in progression of glaucoma.

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Section: Challenges In the Pastsupporting

confidence: 92%

Section: Challenges In the Pastmentioning

confidence: 96%

Significance of Visual Evoked Potentials in the Assessment of Visual Field Defects in Primary Open-Angle Glaucoma: A Review

Kothari

Bokariya

Singh

et al. 2013

Neuroscience Journal

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“…In another study by Nykanen and Raitta, the correlation between fVEP and the parameters of the VF was studied [21]. They stated that there was a correlation between P120 amplitude and average deviation; however, there was no correlation between the latencies and the parameters of VF.…”

Section: Discussionmentioning

confidence: 99%

Flash Electroretinography and Pattern Visual Evoked Potential Changes in Ocular Hypertension Patients

Çavdar

Özkaya

Alper

2013

Journal of Ophthalmology

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Purpose. To evaluate the changes of flash electroretinography (fERG) and pattern visual evoked potentials (pVEP) in ocular hypertension (OHT) patients. Methods. Twenty-five OHT patients and 30 healthy volunteers were enrolled for this cross-sectional study. Opthalmologic examinations, visual field tests, pVEP and fERG were performed. The main outcome measures were the differences between pVEP and fERG parameters. Results. The mean age of OHT patients and volunteers were 57 ± 12.25 years (range 30–65 years), and 53.25 ± 12.0 years (range 30–65 years), respectively. The mean amplitude of the pVEP was statistically lower in the OHT group (P < 0.05). Latency of the two groups was different; however, the difference was not statistically significant (P > 0.05). In fERG of OHT group, there was a significant decrease in the amplitude of the oscillatory potentials (Ops), and a significant delay in latency of rod and cone waves (all P < 0.05). There was no significant change in the flicker fERG waves between the two groups (P > 0.05). Conclusions. Although we found a decrease in Ops amplitude and a prolonged latency in flicker fERG, only the decrease in Ops amplitude was statistically significant between the two groups. The amplitude of Ops wave and amplitude of pVEP may reflect early glaucomatous damage in OHT patients.

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Electrophysiology in Glaucoma Assessment

Graham

Fortune

2015

Glaucoma

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The correlation of visual evoked potentials (VEP) and visual field indices (Octopus G1) in glaucoma and ocular hypertension

Cited by 8 publications

References 4 publications

Significance of Visual Evoked Potentials in the Assessment of Visual Field Defects in Primary Open-Angle Glaucoma: A Review

Significance of Visual Evoked Potentials in the Assessment of Visual Field Defects in Primary Open-Angle Glaucoma: A Review

Flash Electroretinography and Pattern Visual Evoked Potential Changes in Ocular Hypertension Patients

Electrophysiology in Glaucoma Assessment

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