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Published in: Neurological Sciences 3/2018

01-03-2018 | Original Article

Correlations among multifocal electroretinography and optical coherence tomography findings in patients with Parkinson’s disease

Authors: Metin Unlu, Duygu Gulmez Sevim, Murat Gultekin, Cagatay Karaca

Published in: Neurological Sciences | Issue 3/2018

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Abstract

To assess the correlation between functional and anatomical evaluations with multifocal electroretinography (mfERG) and spectral-domain optical coherence tomography (SD-OCT) in patients with Parkinson’s disease (PD). This cross-sectional study involved 116 eyes of 58 patients with PD and 30 age- and sex-matched control subjects. All study participants underwent a comprehensive neuro-ophthalmic examination, retinal single-layer thicknesses and volumes, and peripapillary retinal nerve fiber layer (pRNFL) measurements with SD-OCT, and the patients’ mfERG recordings were evaluated. The macular retinal nerve fiber layer (mRNFL), ganglion cell layer (GCL), inner plexiform layer (IPL), outer nuclear layer (ONL), retinal pigment epithelium (RPE), and photoreceptor layer (PR) thicknesses, and mRNFL, RPE, and PR volumes were found lower in PD compared to those of controls, while outer plexiform layer (OPL) volumes were increased (p < 0.05). We found delayed implicit times and decreased amplitudes in the mfERG of PD patients versus those in control subjects (p < 0.05). We found significant correlations between outer macular volumes, PR thicknesses, and N1 amplitudes of rings 2 and 3and P1 amplitudes of rings 3, 4, and 5. Our study revealed thinning of both inner and outer retinal single layers, increased OPL volume, and delayed implicit times and decreased amplitudes in the mfERG of PD patients versus control subjects and correlation between structural and functional parameters. Our findings point out that SD-OCT and mfERG could both serve as non-invasive tools for evaluating ophthalmic manifestations of Parkinson’s disease.
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Metadata
Title
Correlations among multifocal electroretinography and optical coherence tomography findings in patients with Parkinson’s disease
Authors
Metin Unlu
Duygu Gulmez Sevim
Murat Gultekin
Cagatay Karaca
Publication date
01-03-2018
Publisher
Springer Milan
Published in
Neurological Sciences / Issue 3/2018
Print ISSN: 1590-1874
Electronic ISSN: 1590-3478
DOI
https://doi.org/10.1007/s10072-018-3244-2

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