Case Report

Visual evoked potential and multifocal electroretinography findings in posterior reversible encephalopathy syndrome: a case report

Volume: 7 Number: 3 September 30, 2026
EN TR

Visual evoked potential and multifocal electroretinography findings in posterior reversible encephalopathy syndrome: a case report

Abstract

Posterior Reversible Encephalopathy Syndrome (PRES) is characterized by sudden vasogenic edema primarily in the occipital and parietal lobes of the brain. It is associated with hypertension, renal failure, and pre-eclampsia. Diagnosis relies on history, clinical examination, and MRI findings. This case report focuses on the electrophysiological approach in diagnosing and monitoring PRES, aiming to unders-tand whether improvements seen on MRI also reflect electrophysiological changes. Upon discharge from the intensive care unit, a 27-year-old patient with PRES related to eclampsia underwent 60 arcmin pat-tern-reversal VEP, 60 arcmin pattern ON-OFF VEP, and multifocal electroretinography (mfERG) recor-dings, which were descriptively compared with our laboratory’s previously established normative data-base. The initial VEP recordings showed reduced amplitudes and prolonged implicit times in several components compared with the normative database. In the left eye, multifocal ERG recording on the first day after discharge showed reduced responses in several retinal eccentricity rings compared with the normative database. On the seventh day after discharge, VEP amplitudes improved; however, reduced amplitudes persisted in some components compared with the normative database. In addition, multifocal ERG responses returned to within the normative reference range. Visual electrophysiological tests may provide useful information regarding functional recovery in patients with PRES. These findings suggest that visual electrophysiological tests may provide complementary functional information during short-term follow-up in PRES. Furthermore, our case suggests the possibility of transient retinal functional involvement in addition to visual pathway dysfunction, indicating the need for further research.

Keywords

References

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Details

Primary Language

English

Subjects

Clinical Sciences (Other)

Journal Section

Case Report

Publication Date

September 30, 2026

Submission Date

January 4, 2026

Acceptance Date

August 18, 2026

Published in Issue

Year 2026 Volume: 7 Number: 3

APA
Oruç, A., Altan, M., Altan, Y., Oruç, K. Y., Balci, Ç., Tekkaya, E. N., & Seymen, H. O. (2026). Visual evoked potential and multifocal electroretinography findings in posterior reversible encephalopathy syndrome: a case report. Troia Medical Journal, 7(3), 179-186. https://doi.org/10.55665/troiamedj.1846682
AMA
1.Oruç A, Altan M, Altan Y, et al. Visual evoked potential and multifocal electroretinography findings in posterior reversible encephalopathy syndrome: a case report. Troia Med J. 2026;7(3):179-186. doi:10.55665/troiamedj.1846682
Chicago
Oruç, Aykut, Mehmet Altan, Yasemin Altan, et al. 2026. “Visual Evoked Potential and Multifocal Electroretinography Findings in Posterior Reversible Encephalopathy Syndrome: A Case Report”. Troia Medical Journal 7 (3): 179-86. https://doi.org/10.55665/troiamedj.1846682.
EndNote
Oruç A, Altan M, Altan Y, Oruç KY, Balci Ç, Tekkaya EN, Seymen HO (September 1, 2026) Visual evoked potential and multifocal electroretinography findings in posterior reversible encephalopathy syndrome: a case report. Troia Medical Journal 7 3 179–186.
IEEE
[1]A. Oruç et al., “Visual evoked potential and multifocal electroretinography findings in posterior reversible encephalopathy syndrome: a case report”, Troia Med J, vol. 7, no. 3, pp. 179–186, Sept. 2026, doi: 10.55665/troiamedj.1846682.
ISNAD
Oruç, Aykut - Altan, Mehmet - Altan, Yasemin - Oruç, Kadriye Yağmur - Balci, Çağdaş - Tekkaya, Emre Naci - Seymen, Hakkı Oktay. “Visual Evoked Potential and Multifocal Electroretinography Findings in Posterior Reversible Encephalopathy Syndrome: A Case Report”. Troia Medical Journal 7/3 (September 1, 2026): 179-186. https://doi.org/10.55665/troiamedj.1846682.
JAMA
1.Oruç A, Altan M, Altan Y, Oruç KY, Balci Ç, Tekkaya EN, Seymen HO. Visual evoked potential and multifocal electroretinography findings in posterior reversible encephalopathy syndrome: a case report. Troia Med J. 2026;7:179–186.
MLA
Oruç, Aykut, et al. “Visual Evoked Potential and Multifocal Electroretinography Findings in Posterior Reversible Encephalopathy Syndrome: A Case Report”. Troia Medical Journal, vol. 7, no. 3, Sept. 2026, pp. 179-86, doi:10.55665/troiamedj.1846682.
Vancouver
1.Aykut Oruç, Mehmet Altan, Yasemin Altan, Kadriye Yağmur Oruç, Çağdaş Balci, Emre Naci Tekkaya, Hakkı Oktay Seymen. Visual evoked potential and multifocal electroretinography findings in posterior reversible encephalopathy syndrome: a case report. Troia Med J. 2026 Sep. 1;7(3):179-86. doi:10.55665/troiamedj.1846682

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