Correlation between multifocal electroretinogram and optical coherence tomography findings with visual acuity after vitrectomy surgery for retinal detachment: an observational study

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Abstract

Background

Despite the marked increase in the anatomical success rates of macula-off rhegmatogenous retinal detachment (RRD) surgery, patients may still complain about unsatisfactory visual outcome. This study aims to correlate the postoperative corrected distance visual acuity (CDVA) with the mf-ERG (multifocal electroretinogram) and OCT (optical coherence tomography) findings following vitrectomy surgery for RRD.

Patients and methods

This retrospective observational study included 40 eyes of 40 patients who underwent successful vitrectomy surgery for macula-off RRD. CDVA, mf-ERG amplitudes, mf-ERG latencies, the central macular thickness (CMT) and the integrity of the inner segment/outer segment (IS/OS) junction assessed by OCT, were evaluated 6 months postoperatively. The correlations between CDVA with mf-ERG amplitudes, mf-ERG latencies, central macular thickness, and IS/OS junction integrity were analyzed.

Results

There was a statistically significant moderate positive correlation between CDVA of the studied eyes with mf-ERG amplitudes of N1, P1 and N2 in ring 1 ( P = 0.008; P < 0.001 and P = 0.004, respectively), CMT ( P < 0.001), and the integrity of IS/OS junction ( P < 0.001). There was no significant correlation between CDVA and mf-ERG latencies in ring 1 ( P > 0.05). Linear regression analysis revealed that CDVA was significantly associated with mf-ERG amplitudes and the IS/OS junction integrity. In addition, there was a strong positive correlation between mf-ERG amplitudes in ring 1 and the IS/OS junction integrity.

Conclusions

The integrated interpretation of postoperative CDVA, multifocal ERG parameters, and OCT findings provides useful information about functional visual recovery and retinal microstructural changes following vitrectomy for macula-off RRD surgery. The positive correlation between the IS/OS junction integrity and the mf-ERG amplitudes was stronger than the correlation between the IS/OS junction integrity and CDVA suggesting that mf-ERG may be superior to CDVA in reflecting the extent of microstructural damage in the photoreceptor layer.

Trial Registration

Clinicaltrials.gov, NCT05993208. Registered 15 August 2023 - Retrospectively registered, https://classic.clinicaltrials.gov/ct2/show/NCT05993208.

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Most cited references 23

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OCT Biomarkers as Functional Outcome Predictors in Diabetic Macular Edema Treated with Dexamethasone Implant

Dinah Zur, Matias Iglicki, Catharina Busch … (2018)

Identification and characterization of patients with diabetic macular edema (DME) are important for individualizing treatment and optimizing outcome. We investigated OCT biomarkers for DME treated by intravitreal dexamethasone (DEX) implant.

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Foveal microstructure and visual acuity after retinal detachment repair: imaging analysis by Fourier-domain optical coherence tomography.

Hirokazu Sakaguchi, Taku Wakabayashi, Hisataka Fujimoto … (2009)

To evaluate foveal microstructural changes in eyes with anatomically successful repair of rhegmatogenous retinal detachments (RRDs). Retrospective, consecutive, observational case series. Fifty-three eyes of 51 consecutive patients with macula-on RRDs (15 eyes) or macula-off RRDs (38 eyes) after anatomically successful surgical repair. A microscopic fundus examination was conducted followed by Fourier-domain optical coherence tomography (FD-OCT) to assess the postoperative foveal microstructure. The correlation between the postoperative best-corrected visual acuity (BCVA) and microstructural findings at the fovea was evaluated. Images of the foveal microstructure obtained by FD-OCT and the BCVA measured on the same day. We obtained FD-OCT images a mean of 10.3+/-7.3 months (range, 1-25) postoperatively. Foveal anatomic abnormalities were detected in 33 eyes (62%); disruption of the junction between the photoreceptor inner and outer segments (IS/OS) in 23 eyes (43%), of which 9 eyes (39%) had a disrupted external limiting membrane (ELM); residual subretinal fluid in 6 eyes (11%), epiretinal membranes in 12 eyes (23%), and cystoid macular edema in 2 eyes (4%). Disruption of the photoreceptor IS/OS junction was observed only in macula-off eyes, whereas other microstructural abnormalities were observed in both macula-on and macula-off eyes. In preoperative macula-off eyes, the postoperative BCVA was significantly correlated with the integrity of the photoreceptor IS/OS and ELM signals detected by FD-OCT postoperatively (r=0.805; P<0.001). Of the 16 eyes followed by FD-OCT, the photoreceptor IS/OS junction was restored in 7 (64%) of the 11 eyes with a disrupted back-reflection line from the IS/OS junction, but without disrupted ELM signals at the initial examination. Of the 5 eyes with disrupted back-reflection lines from both IS/OS junction and ELM at the initial examination, the photoreceptor layer was not restored completely during the follow-up period in any eyes. After anatomically successful RRD repair, FD-OCT is a valuable, noninvasive tool for evaluating foveal microstructural changes. The integrity of the photoreceptor IS/OS junction and ELM signals detected by FD-OCT may account for visual restoration in patients with preoperative macula-off RRDs. Preservation of the ELM postoperatively may predict the subsequent restoration of the photoreceptor layer.

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Correlation between spectral-domain optical coherence tomography findings and visual outcome after primary rhegmatogenous retinal detachment repair.

Vittorio Scavella, M Esposito, Francesca Grandinetti … (2011)

To correlate the postoperative visual outcome with the spectral-domain optical coherence tomography (SD-OCT) findings in the fovea after successful rhegmatogenous retinal detachment repair. Cross-sectional, observational study. Thirty-five patients with preoperative macula-on rhegmatogenous retinal detachment (12 eyes) and macula-off rhegmatogenous retinal detachment (23 eyes) who underwent scleral buckling surgery for primary rhegmatogenous retinal detachment were recruited. Early Treatment Diabetic Retinopathy Study best-corrected visual acuity measurement, microperimetry, and SD-OCT examination were performed on the same day. Foveal center retinal thickness, central 1-mm subfield thickness, and outer nuclear layer thickness were measured using SD-OCT. The presence or absence of epiretinal membrane, intraretinal fluid, and subretinal fluid was assessed. The status of the external limiting membrane, inner/outer segment junction, and intermediate line was also evaluated and judged as disrupted or complete. The correlations between SD-OCT findings and either postoperative best-corrected visual acuity or retinal sensitivities for central 12° were analyzed. The outer nuclear layer thickness was the only significant SD-OCT retinal measurement strongly correlated with both postoperative best-corrected visual acuity (r = 0.61; P < 0.001) and retinal sensitivities for central 12° (r = 0.53; P = 0.001). Among the SD-OCT imaging findings, status of the external limiting membrane, inner/outer segment junction, and intermediate line and the presence of intraretinal fluid showed a significantly high correlation either with best-corrected visual acuity outcome (r = -0.60; P < 0.001, r = -0.63; P < 0.001, r = -0.66; P < 0.001, and r = -0.50; P = 0.002, respectively) or with postoperative retinal sensitivities (r = -0.59; P < 0.001, r = -0.61; P < 0.001, r = -0.66; P < 0.001, r = -0.50; P = 0.002, respectively). Multivariate analysis showed that the outer nuclear layer thickness and the status of the intermediate line were the most important predictors of visual outcome (P < 0.001 and P < 0.001, respectively). This study showed that not only the status of the external limiting membrane and the inner/outer segment junction but also the integrity of the intermediate line and the outer nuclear layer thickness changes may be important predictors of postoperative visual outcome after anatomically successful rhegmatogenous retinal detachment repair.

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Author and article information

Contributors

Mahmoud Abdel-Radi:

ORCID: http://orcid.org/0000-0002-9383-9520

mahmoudradi@aun.edu.eg

Journal

Journal ID (nlm-ta): Int J Retina Vitreous

Journal ID (iso-abbrev): Int J Retina Vitreous

Title: International Journal of Retina and Vitreous

Publisher: BioMed Central (London )

ISSN (Electronic): 2056-9920

Publication date (Electronic): 23 January 2024

Publication date PMC-release: 23 January 2024

Publication date Collection: 2024

Volume: 10

Electronic Location Identifier: 10

Affiliations

[1 ]Department of Ophthalmology, New Valley University, ( https://ror.org/04349ry21) New Valley, Egypt

[2 ]Department of Ophthalmology, Assiut University, ( https://ror.org/01jaj8n65) Assiut, Egypt

Author information

Mahmoud Abdel-Radi http://orcid.org/0000-0002-9383-9520

Article

Publisher ID: 527

DOI: 10.1186/s40942-024-00527-7

PMC ID: 10804544

SO-VID: fd6b2026-fffc-47c5-b7f1-55f77fe3b4a5

License:

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver ( http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

History

Date received : 8 December 2023

Date accepted : 4 January 2024

Funding

Funded by: Assiut University

Open Access :

Open access funding provided by The Science, Technology & Innovation Funding Authority (STDF) in cooperation with The Egyptian Knowledge Bank (EKB).

Custom metadata

Keywords: retinal detachment,mf-erg,oct,cdva,vitrectomy

Data availability:

Keywords: retinal detachment, mf-erg, oct, cdva, vitrectomy

Correlation between multifocal electroretinogram and optical coherence tomography findings with visual acuity after vitrectomy surgery for retinal detachment: an observational study

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Most cited references 23

OCT Biomarkers as Functional Outcome Predictors in Diabetic Macular Edema Treated with Dexamethasone Implant

Foveal microstructure and visual acuity after retinal detachment repair: imaging analysis by Fourier-domain optical coherence tomography.

Correlation between spectral-domain optical coherence tomography findings and visual outcome after primary rhegmatogenous retinal detachment repair.

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