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- W2011640809 abstract "Background: To evaluate structural changes in the retina and correlate those with visual function measurements in patients with Parkinson disease (PD). Methods: A cross-sectional comparative study of 20 patients with PD and 20 age-matched healthy controls was conducted. Visual acuity, color vision, contrast sensitivity, visual fields, pattern visual-evoked response (VER), and multifocal electroretinogram were recorded to determine functional change, whereas structural changes were evaluated with retinal nerve fiber layer (RNFL) thickness, macular thickness, macular volume, and ganglion cell–inner plexiform layer complex (GCL-IPL) thickness using spectral domain ocular coherence tomography (SD-OCT). Results: PD patients ranged from Stage 1–3, with median Stage 2 (Hoehn and Yahr Classification) with mean Unified Parkinson Disease Rating Scale III score of 19 ± 10.42, and average disease duration of 5.8 ± 2.78 years. Visual acuity, color vision, and visual fields were unaffected but contrast sensitivity was significantly worse than controls (P < 0.001). Multifocal electroretinogram values in the central 2° field revealed decreased foveal electrical activity, with increased pattern VER amplitude and latency. Significant RNFL thinning was observed in the average RNFL (P = 0.033), superior (P = 0.018), and temporal (P = 0.036) quadrants. Significant ganglion cell layer loss was captured on SD-OCT with average, minimum GCL-IPL, and all 6 sectors showing thinning (P ≤ 0.003). The functional changes correlated significantly with structural changes, disease duration, and severity. There was no correlation between structural changes in the retina and disease duration or severity. Conclusions: Subclinical visual dysfunction was observed in patients with PD with good structural–functional correlation. GCL-IPL thinning may be a more reliable parameter than RNFL thickness for structural alterations of the retina in patients with PD." @default.
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- W2011640809 date "2015-09-01" @default.
- W2011640809 modified "2023-10-11" @default.
- W2011640809 title "Correlation Between Structural and Functional Retinal Changes in Parkinson Disease" @default.
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- W2011640809 doi "https://doi.org/10.1097/wno.0000000000000240" @default.
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