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Parkinson’s Disease
Volume 2012 (2012), Article ID 564812, 7 pages
http://dx.doi.org/10.1155/2012/564812
Research Article

Web-Based Assessment of Visual and Visuospatial Symptoms in Parkinson’s Disease

1Translational Research Center for TBI and Stress Disorders, VA Boston Healthcare System, Boston, MA 02130, USA
2Department of Psychiatry, Boston University School of Medicine, Boston, MA 02118, USA
3Memorial Hospital of Rhode Island, Pawtucket, RI 02860, USA
4Department of Psychology, Boston University, Boston, MA 02215, USA
5Department of Psychology, Bridgewater State University, Bridgewater, MA 02325, USA

Received 1 July 2011; Accepted 17 November 2011

Academic Editor: Gregory P. Crucian

Copyright © 2012 Melissa M. Amick et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Visual and visuospatial dysfunction is prevalent in Parkinson’s disease (PD). To promote assessment of these often overlooked symptoms, we adapted the PD Vision Questionnaire for Internet administration. The questionnaire evaluates visual and visuospatial symptoms, impairments in activities of daily living (ADLs), and motor symptoms. PD participants of mild to moderate motor severity (n=24) and healthy control participants (HC, n=23) completed the questionnaire in paper and web-based formats. Reliability was assessed by comparing responses across formats. Construct validity was evaluated by reference to performance on measures of vision, visuospatial cognition, ADLs, and motor symptoms. The web-based format showed excellent reliability with respect to the paper format for both groups (all Ps<0.001; HC completing the visual and visuospatial section only). Demonstrating the construct validity of the web-based questionnaire, self-rated ADL and visual and visuospatial functioning were significantly associated with performance on objective measures of these abilities (all Ps<0.01). The findings indicate that web-based administration may be a reliable and valid method of assessing visual and visuospatial and ADL functioning in PD.