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The Impact of Structural and Functional Parameters in Glaucoma Patients on Patient-Reported Visual Functioning

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  • Christoph Hirneiß
  • Lukas Reznicek
  • Michaela Vogel
  • Konrad Pesudovs

Abstract

Background: To evaluate the impact of structural changes of the retinal nerve fiber layer (RNFL), and visual field loss, on functional impairment assessed by patient-reported visual functioning in glaucoma. Methods: Patients with glaucomatous optic nerve damage were enrolled in this cross-sectional study. Peripapillary RNFL thickness was obtained with spectral-domain optical coherence tomography (SD-OCT). Function was assessed by patient-reported visual functioning using the Rasch-calibrated Glaucoma Activity Limitation 9 (GAL-9) questionnaire and standard automated perimetry. The impact of peripapillary RNFL loss on functional impairment was analyzed with correlation and linear regression analyses. Results: A total of 176 eyes from 88 glaucoma patients were included. The SD-OCT assessed temporal-superior and temporal-inferior RNFL sector of the worse eye revealed significant correlation with the GAL-9 scores (r=-0.298, p=0.011 and r=-0.251, p=0.033, respectively). In mutivariate regression analysis, the best predictors for patient-reported visual functioning were visual acuity of the better eye and mean defect of the worse eye (R2=0.334), while structural parameters could not enhance the prediction of GAL-9 scores. Conclusions: Self-reported visual functioning of patients with glaucoma is better predicted by visual performance data than structural parameters. However, some structural changes of the worse eye are significantly correlated with patient-reported visual functioning.

Suggested Citation

  • Christoph Hirneiß & Lukas Reznicek & Michaela Vogel & Konrad Pesudovs, 2013. "The Impact of Structural and Functional Parameters in Glaucoma Patients on Patient-Reported Visual Functioning," PLOS ONE, Public Library of Science, vol. 8(12), pages 1-1, December.
    • Handle: RePEc:plo:pone00:0080757
    DOI: 10.1371/journal.pone.0080757
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