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Effect of a home visit-based low vision rehabilitation intervention on visual function outcomes: an exploratory randomized controlled trial

Acton, Jennifer H. ORCID:, Molik, Bablin, Court, Helen and Margrain, Tom H. ORCID: 2016. Effect of a home visit-based low vision rehabilitation intervention on visual function outcomes: an exploratory randomized controlled trial. Investigative Ophthalmology & Visual Science 57 (15) , pp. 6662-6667. 10.1167/iovs.16-19901

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Purpose: To examine the effect of a home visit–based visual rehabilitation intervention on: (1) self-reported visual function and (2) depression, wellbeing, loneliness, adjustment to visual loss, and generic health-related quality of life. Methods: In an exploratory, assessor-masked, individually randomized, single-center controlled trial, 67 participants (age: 75.22 ± 16.21 years) with low vision were allocated either to receive the home visit–based visual rehabilitation intervention (n = 35) or to a waiting list control arm (n = 32). Outcome measures were collected by telephone interview at baseline and 6 months later. The primary outcome measure was the 48-item Veterans Affairs Low Vision Visual Functioning Questionnaire (VA LV VFQ-48). Secondary outcome measures were: the Patient Health Questionnaire; the Warwick-Edinburgh Mental Well-being Scale, the Adjustment to Age-related Visual Loss Scale, the standardized health-related quality of life questionnaire, and the University of California, Los Angeles Loneliness Scale. Questionnaire scores at follow-up were analyzed using analysis of covariance, controlling for the baseline score and the variables, age, number of comorbidities, visual acuity, and baseline wellbeing score. Results: Visual function (VA LV VFQ-48) improved at follow-up in both groups, with a significantly greater improvement demonstrated by the intervention group (95% confidence interval, 0.33–0.68 logits, P = 0.031), with a moderate effect size (0.55). Secondary outcomes did not indicate any statistically significant differences between groups. Conclusions: The study provides preliminary evidence that a home visit–based visual rehabilitation intervention has a positive influence on vision-related functional outcomes. A larger trial with an expanded intervention to include a mental health component and cost-effectiveness analysis is needed.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Optometry and Vision Sciences
Uncontrolled Keywords: Low vision; visual rehabilitation; quality of life; depression; wellbeing
Publisher: Association for Research in Vision and Ophthalmology
ISSN: 0146-0404
Funders: Sight Cymru
Date of First Compliant Deposit: 15 November 2016
Date of Acceptance: 24 October 2016
Last Modified: 03 May 2023 20:16

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