Pattern-reversal visual evoked potentials as a diagnostic tool for ocular malingering

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dc.contributor.authorSoares, Tarciana de Souza [UNIFESP]
dc.contributor.authorSacai, Paula Yuri [UNIFESP]
dc.contributor.authorBerezovsky, Adriana [UNIFESP]
dc.contributor.authorRocha, Daniel Martins [UNIFESP]
dc.contributor.authorWatanabe, Sung Eun Song [UNIFESP]
dc.contributor.authorSalomao, Solange Rios [UNIFESP]
dc.date.accessioned2019-07-22T15:46:42Z
dc.date.available2019-07-22T15:46:42Z
dc.date.issued2016
dc.description.abstractPurpose: To investigate the contributions of transient pattern-reversal visual evoked potentials in the diagnosis of ocular malingering at a Brazilian university hospital. Methods: Adult patients with suspected malingering in one or both eyes were referred for visual evoked potential testing. Data from patients' medical records were reviewed and analyzed retrospectively. Data analysis included the distance optotype visual acuity based on a ETDRS retro-illuminated chart and the transient pattern-reversal visual evoked potential parameters of latency (milliseconds) and amplitude (microvolts) for the P100 component, using checkerboards with visual subtenses of 15' and 60'. Motivations for malingering were noted. Results: The 20 subjects included 11 (55%) women. Patient ages ranged from 21 to 61 years (mean = 45.05 +/- 11.76 yearsen
dc.description.abstractmedian = 49 years). In 8 patients (6 women), both eyes exhibited reduced visual acuity with normal pattern-reversal visually evoked potential parameters (pure malingerers). The remaining 12 patients (7 men) exhibited reduced vision in only 1 eye, with simulated reduced vision in the contralateral eye (exaggerators). Financial motivation was noted in 18 patients (9 men). Conclusion: Normal pattern-reversal visually evoked potential parameters with suspected ocular malingering were observed in a 20 patient cohort. This electrophysiological technique appeared to be useful as a measure of visual pathway integrity in this specific population.en
dc.description.affiliationUniv Fed Sao Paulo UNIFESP, Dept Oftalmol & Ciencias Visuais, Lab Eletrofisiol Visual Clin, EPM, Sao Paulo, SP, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo UNIFESP, Dept Oftalmol & Ciencias Visuais, Lab Eletrofisiol Visual Clin, EPM, Sao Paulo, SP, Brazil
dc.description.sourceWeb of Science
dc.format.extent303-307
dc.identifierhttp://dx.doi.org/10.5935/0004-2749.20160087
dc.identifier.citationArquivos Brasileiros De Oftalmologia. Sao Paulo, v. 79, n. 5, p. 303-307, 2016.
dc.identifier.doi10.5935/0004-2749.20160087
dc.identifier.fileS0004-27492016000500303.pdf
dc.identifier.issn0004-2749
dc.identifier.scieloS0004-27492016000500303
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/51037
dc.identifier.wosWOS:000391431500006
dc.language.isoeng
dc.publisherConsel Brasil Oftalmologia
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectEvoked potentialsen
dc.subjectvisual/physiologyen
dc.subjectMalingeringen
dc.subjectPattern recognitionen
dc.subjectvisualen
dc.subjectVision disordersen
dc.subjectVisual acuityen
dc.titlePattern-reversal visual evoked potentials as a diagnostic tool for ocular malingeringen
dc.title.alternativePotenciais visuais evocados por padrões reversos como uma ferramenta diagnóstica de simulaçãopt
dc.typeinfo:eu-repo/semantics/article
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