Discordance Between Subjective Perimetric Visual Fields and Objective Multifocal Visual Evoked Potential-Determined Visual Fields in Patients With Hemianopsia

Watanabe, Ken Ichi; Shinoda, Kei; Kimura, Ikuo; Mashima, Yukihiko; Oguchi, Yoshihisa; Ohde, Hisao

doi:10.1016/j.ajo.2006.10.042

Cited by 19 publications

(17 citation statements)

References 37 publications

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“…Watanabe et al [34] found similar results showing the concordance between the objective and subjective methods (mfVEP and visual field analysis) of assessing the bitemporal visual field defect in pituitary adenoma subjects. Hedges et al [35], Klistorner et al [36] and Betsuin et al [37] have studied patients with longstanding chiasmal disease.…”

Section: Discussionsupporting

confidence: 65%

“…Watanabe et al [34] reported that summed mfVEP responses showed normal amplitude in the quadrant with normal visual field in SAP. This is the first study to report correlation between mfVEP and SAP exclusively in eyes with chiasmal compression due to pituitary adenoma.…”

Section: Discussionmentioning

confidence: 98%

“…Studies in chiasmal compression due to pituitary adenoma [34,[36][37][38] have assessed the correlation between visual field defect in conventional subjective perimetry and amplitude reduction in objective mfVEP perimetry. Watanabe et al [34] reported that summed mfVEP responses showed normal amplitude in the quadrant with normal visual field in SAP.…”

Section: Discussionmentioning

confidence: 99%

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Multifocal visual evoked potential recordings in compressive optic neuropathy secondary to pituitary adenoma

et al. 2010

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To investigate the effect of pituitary adenoma compressing the optic chiasm on multifocal visual evoked potential (mfVEP) responses and to compare these responses with visual field defects seen on static automated perimetry (SAP). Eight eyes of four subjects (median age, 41.50 years; interquartile range, 33-51 years) who were diagnosed with pituitary adenoma on magnetic resonance imaging (MRI) and seen to have a bitemporal visual field defect on standard automated perimetry (SAP), and twelve age-matched normal subjects (median age, 47.00 years; interquartile range, 34.75-51.75 years) were subjected to multifocal visual evoked potential (mfVEP) testing. The monocular latencies and monocular amplitudes of each sector of cases were compared with the responses of normative database. The topography of the mfVEP response was compared with corresponding field defect as seen in total deviation threshold on SAP to allow a comparison with conventional subjective perimetry. The mfVEP amplitudes were reduced in the areas with visual field defect on SAP. In 6 out of 8 eyes, locations with preserved amplitudes and no visual defects showed prolonged latency. A prolonged median latency of 9.17 ms (interquartile range, 3.44-17.69 ms) in cases was seen when compared to the median latency of 1.67 ms (interquartile range, 0.94-4.17 ms) in age-matched controls with P value of 0.054. Chiasmal compression due to pituitary adenoma causes the reduction of amplitudes and prolongation of latencies of the mfVEP response. The mfVEP can be used to assess objectively the topography of the visual field in compressive optic neuropathy secondary to pituitary adenomas. It can be used in assessing the subjects whose visual field report is unreliable and prolonged median latency can be an early sign of the disease.

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Section: Discussionsupporting

confidence: 65%

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

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Multifocal visual evoked potential recordings in compressive optic neuropathy secondary to pituitary adenoma

et al. 2010

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“…Interestingly, the alterations of the topographic map of the mfVEPs may show discordance with the subjectively determined visual fields in some cases with hemianopic field defects. (Figure 14) (Watanabe et al, 2007) In some patients with occipital lesions, the subjective (Goldmann's perimetry etc) and objective (mfVEP) visual field results are discordant, and some of them will show a recovery of the visual field deficits. (Watanabe et al, 2007) with permission with permission from Elsevier.…”

Section: Multifocal Vep and Its Clinical Applicationsmentioning

confidence: 99%

“…Modified and reproduced from (Shinoda et al, 2000) with permission. (Watanabe et al, 2007) with permission with permission from Elsevier.…”

Section: Multifocal Vep and Its Clinical Applicationsmentioning

confidence: 99%

Objective Assessment of Local Retinal Function by Focal Macular and Multifocal Electroretinograms

Shinoda¹,

Matsumoto²,

Ohde³

2011

Electroretinograms

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Objective visual field determination in forensic ophthalmology with an optimized 4-channel multifocal VEP perimetry system: a case report of a patient with retinitis pigmentosa

et al. 2011

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We present the case of a 59-year-old male patient with progressive vision impairment and consecutive visual field narrowing ("tunnel view") for 7 years and a known retinitis pigmentosa for 5 years. The remaining Goldmann perimetric visual field at time reported was less than 5°. A request for blindness-related social benefits was rejected because an ophthalmologic expert assessment suggested malingering. This prompted us to assess an objective determination of the visual field using multifocal VEPs. Objective visual field recordings were performed with a four-channel multifocal VEP-perimeter using 58 stimulus fields (pattern reversal dartboard stimulus configuration). The correlated signal data were processed using an off-line method. At each field, the recording from the channel with the maximal signal-to-noise ratio (SNR) was retained, thus resulting in an SNR optimized virtual recording. Analysis of VEP signals was performed for each single field and concentric rings and compared to an average response measured in five healthy subjects. Substantial VEP responses could be identified in three fields within the innermost ring (eccentricity, 1.7°) for both eyes, although SNR was generally low. More eccentric stimuli did not elicit reliable VEP responses. The mfVEP recording was correlated with perimetric visual field data. The current SNR optimization by using the channel with the largest SNR provides a good method to extract useful data from recordings and may be appropriate for the use in forensic ophthalmology.

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Discordance Between Subjective Perimetric Visual Fields and Objective Multifocal Visual Evoked Potential-Determined Visual Fields in Patients With Hemianopsia

Cited by 19 publications

References 37 publications

Multifocal visual evoked potential recordings in compressive optic neuropathy secondary to pituitary adenoma

Multifocal visual evoked potential recordings in compressive optic neuropathy secondary to pituitary adenoma

Objective Assessment of Local Retinal Function by Focal Macular and Multifocal Electroretinograms

Objective visual field determination in forensic ophthalmology with an optimized 4-channel multifocal VEP perimetry system: a case report of a patient with retinitis pigmentosa

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