Visual symptoms in Parkinson's disease


Parkinson’s disease (PD) is a common disorder of middle-aged and elderly people in which degeneration of the extrapyramidal motor system causes significant movement problems. In some patients, however, there are additional disturbances in sensory systems including loss of the sense of smell and auditory and/or visual problems. This article is a general overview of the visual problems likely to be encountered in PD. Changes in vision in PD may result from alterations in visual acuity, contrast sensitivity, colour discrimination, pupil reactivity, eye movements, motion perception, visual field sensitivity and visual processing speeds. Slower visual processing speeds can also lead to a decline in visual perception especially for rapidly changing visual stimuli. In addition, there may be disturbances of visuo-spatial orientation, facial recognition problems, and chronic visual hallucinations. Some of the treatments used in PD may also have adverse ocular reactions. The pattern electroretinogram (PERG) is useful in evaluating retinal dopamine mechanisms and in monitoring dopamine therapies in PD. If visual problems are present, they can have an important effect on the quality of life of the patient, which can be improved by accurate diagnosis and where possible, correction of such defects.

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Divisions: College of Health & Life Sciences > School of Optometry > Optometry
College of Health & Life Sciences > School of Optometry > Optometry & Vision Science Research Group (OVSRG)
College of Health & Life Sciences
College of Health & Life Sciences > School of Optometry > Vision, Hearing and Language
College of Health & Life Sciences > Clinical and Systems Neuroscience
Additional Information: Copyright © 2011 R. A. Armstrong. 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.
Uncontrolled Keywords: Parkinson's disease,degeneration,extrapyramidal motor system,movement problems,sensory systems,smell,auditory problems,visual problems,visual acuity,contrast sensitivity,colour discrimination,pupil reactivity,eye movements,motion perception,visual field sensitivity,visual processing speeds,visual perception especially,visual stimuli,visuospatial orientation,facial recognition problems,chronic visual hallucinations,treatments,adverse ocular reactions,pattern electroretinogram,PERG,retinal dopamine mechanisms,monitoring dopamine therapies,Neuroscience (miscellaneous),Clinical Neurology,Psychiatry and Mental health
Publication ISSN: 2042-0080
Last Modified: 30 May 2024 07:08
Date Deposited: 14 Jun 2011 11:15
Full Text Link: http://www.sage ... pd/2011/908306/
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2011
Authors: Armstrong, Richard A. (ORCID Profile 0000-0002-5046-3199)

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