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Visual Impairment in Parkinson's Disease Questionnaire (VIPD-Q)
Please visit this website for more information about the instrument: Visual Impairment in Parkinson's Disease Questionnaire
Exploratory: Parkinson's Disease (PD)
Short Description of Instrument
The Visual Impairment in Parkinson's Disease Questionnaire (VIPD-Q) assesses ophthalmologic symptoms across 4 domains according to structures: (1) ocular surface; (2) intraocular; (3) oculomotor; and (4) optic nerve.
Scoring and Psychometric Properties
Scoring: 17 items, 4 in each of 4 domains and 1 question on visual hallucinations, 4-point Likert scale for each, self-report
Psychometric Properties: Cronbach coefficient a 0.86 (95% CI, 0.84-0.87)
Strengths: Good internal consistency
Weaknesses: Not yet validated with objective measures of vision or ophthalmological disease
Key Reference:
Borm CDJM, Visser F, Werkmann M, de Graaf D, Putz D, Seppi K, Poewe W, Vlaar AMM, Hoyng C, Bloem BR, Theelen T, de Vries NM. Seeing ophthalmologic problems in Parkinson disease: Results of a visual impairment questionnaire. Neurology. 2020 Apr 7;94(14):e1539-e1547.
Document last updated August 2022