Purpose To evaluate correlations between visual evoked potentials (VEP), pattern electroretinogram (PERG), and macular and retinal nerve fiber layer (RNFL) thickness measured by optical coherence tomography (OCT) and the severity of Parkinson disease (PD). Methods Forty‐six patients diagnosed with PD were enrolled in this study and underwent VEP, PERG, and Cirrus and Spectralis OCT measurements of macular and RNFL thicknesses, and evaluation of PD severity using the Hoehn & Yahr scale to measure PD symptom progression, the Schwab and England Activities of Daily Living Scale (SE‐ADL) to evaluate patient quality of life (QOL), and disease duration. Logistical regression was performed to analyze which measures, if any, could predict PD symptom progression or effect on QOL. Results Visual functional parameters (best corrected visual acuity, mean deviation of visual field, PERG P50 and N95 component amplitude, and PERG P50 component latency) and structural parameters (Cirrus and Spectralis OCT measurements of RNFL and retinal thickness) were decreased in PD patients compared with healthy controls. OCT measurements were significantly negatively correlated with the Hoehn & Yahr scale, and significantly postively correlated with the SE‐ADL scale. Based on logistical regression analysis, fovea thickness provided by Cirrus OCT predicted PD severity, and QOL and amplitude of the PERG N95 component predicted a lower SE‐ADL score. Conclusion Patients with greater damage in the RPE or in the ganglion cells tend to have a lower QOL and more severe PD symptoms. Foveal thicknesses and the PERG N95 component provide good biomarkers for predicting QOL and disease severity.

Optic nerve head analysis and retinal nerve fiber layer thickness can be reproducibly assessed by OCT. The reproducibility of the device supports its potential use for ocular hypertension follow-up, although its use in glaucoma patients may present difficulties in some parameters.

All subjects gave detailed consent to participate in this study, which was conducted in accordance with the guidelines determined by the Ethics Committee of the Miguel Servet Hospital and the principles of the Declaration of Helsinki.

RESUMENObjetivo: Determinar las correlaciones entre los parámetros estructurales de la cabeza del nervio óptico y CFNR obtenidos mediante la topografía papilar (HRT II), la tomografía óptica de coherencia (Stratus OCT 3000) y la polarimetría láser (GDx VCC), con los índices globales de la perimetría automatizada convencional en sujetos normales, hipertensos oculares y con glaucoma. Material y método: Trescientos ochenta y nueve ojos fueron incluidos en el estudio y clasificados en 3 grupos: 43 normales, 274 hipertensos oculares y 72 glaucomas según los resultados de la presión intraocular basal y la PA. Se calcularon las correlaciones de Pearson entre los índices principales de la PA, desviación media (DM) y desviación estándar de la media (DSM), y los parámetros morfométricos papilares y de la capa de fibras nerviosas de la retina (CFNR) obtenidos con el HRT II, OCT y GDx VCC, en los diferentes grupos diagnósticos. ARTÍCULO ORIGINAL ABSTRACTPurpose: To determine the correlations between structural parameters of the optic nerve head and the retinal nerve fiber layer (RNFL) obtained by using a Heidelberg Retina Tomograph II (HRT II), optic coherence tomography (OCT), and laser polarimetry (GDX-VCC) and the perimetric indices of standard automated perimetry (SAP) in normal, ocular hypertensive and glaucomatous subjects. Methods: Three hundred and eighty-nine patients were enrolled in the study and classified into three separate groups: 43 with normal eyes, 274 with ocular hypertensive eyes and 72 with glaucomatous eyes. Subjects were classified according to the basal intraocular pressure and the SAP results. Pearson's correlation coefficients were calculated between the global perimetric indices, mean deviation (MD) and pattern standard deviation (PSD), and structural parameters of the RNFL and optic disc obtained by using HRT II, OCT and GDX-VCC in the different diagnostic groups.