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Article type: Research Article
Authors: Pengo, Martaa | Murueta-Goyena, Aneb; c | Teijeira-Portas, Sarab | Acera, Marianb | Del Pino, Rociob | Sáez-Atxukarro, Oihaneb | Diez-Cirarda, Mariab | Tijero, Beatrizb; d | Fernández-Valle, Tamarab; d | Gómez Esteban, Juan Carlosb; c; d | Gabilondo, Iñigob; d; e; *
Affiliations: [a] Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy | [b] Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, Barakaldo, Bizkaia, Spain | [c] Department of Neurosciences, University of the Basque Country (UPV/EHU), Leioa, Spain | [d] Department of Neurology, Cruces University Hospital, Barakaldo, Spain | [e] Ikerbasque: The Basque Foundation for Science, Bilbao, Spain
Correspondence: [*] Correspondence to: Iñigo Gabilondo, MD, PhD, Neurodegenerative Diseases Group, Biocruces Bizkaia Health Research Institute, Plaza de Cruces 12, Barakaldo (Bizkaia), CP 48903, Spain. Tel./Fax: +34 946006000/Ext. 7970; E-mail: igabilon@gmail.com.
Abstract: Background:Visual impairment is frequent and highly disabling in Parkinson’s disease (PD); however, few studies have comprehensively evaluated its impact on vision-related quality of life. Objective:To evaluate the relationship between visual function tests and the visual impairment perceived by PD patients in daily living activities. Methods:We cross-sectionally evaluated 62 PD patients and 33 healthy controls (HC). Visual disability was measured with a comprehensive battery of primary visual function and visual cognition tests (visual outcomes), and vision-related quality of life was evaluated with the National Eye Institute 25-Item Visual Function Questionnaire (NEI VFQ-25). The relationship between visual outcomes and NEI VFQ-25 sub-scores was analyzed with Pearson’s correlations and stepwise linear regression. Results:In PD patients, and not in HC, most NEI VFQ-25 sub-scores were significantly correlated with Cube Analysis and Dot Counting from Visual Object and Space Perception (VOSP) battery (visual perception), Clock Drawing Test (visuoconstructive capacity) and Trail Making Test part-A (visual attention and processing speed) and to a lesser extent with high- and low-contrast visual acuity. Dot Counting (VOSP) was the test primarily associated with most NEI VFQ-25 sub-scores (5 out of 12). Roth-28 color test was the one that best explained the variance of Peripheral Vision (R2: 0.21) and Role Difficulties (R2: 0.36) sub-scores of NEI VFQ-25, while photopic contrast sensitivity explained 41% of Driving sub-score variance. Conclusion:Vision-related quality of life in PD is mainly influenced by alterations in visual perception, visuoconstructive capacity and visual attention and processing speed. Future studies are warranted to confirm and further extend our findings.
Keywords: Activities of daily living, visual acuity, contrast sensitivity, visual cognition, Parkinson’s disease
DOI: 10.3233/JPD-213143
Journal: Journal of Parkinson's Disease, vol. 12, no. 5, pp. 1633-1643, 2022
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