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  • Title: Economic burden of blindness and visual impairment in Germany from a societal perspective: a cost-of-illness study.
    Author: Chuvarayan Y, Finger RP, Köberlein-Neu J.
    Journal: Eur J Health Econ; 2020 Feb; 21(1):115-127. PubMed ID: 31493181.
    Abstract:
    BACKGROUND: Visual impairment and blindness cause a considerable and increasing economic burden affecting not only persons with vision loss and their families, but also societies. For the majority of countries, there is no solid database that would allow a comprehensive assessment of costs from a societal perspective. The present study was conducted to fill this gap. OBJECTIVES: To investigate resource utilization of blind or visually impaired people and to assess the economic burden of blindness and visual impairment in Germany. METHODS: This cross-sectional cost-of-illness study measures the economic burden of blindness and visual impairment bottom-up and from a societal perspective. Therefore, blind and visually impaired persons were recruited via national self-help organizations (prevalence-based approach) and interviewed regarding their utilized resources using various survey modes (mixed-mode approach). The observation period was 6 months retrospectively. Utilized resources were valued applying standardized unit costs (macro-costing). Calculations for the study population provided direct and indirect costs per person for a period of 6 months. Further cost per category was extrapolated to 1 year for the general population of Germany. Uncertainty of results was addressed applying univariate deterministic sensitivity analyses. RESULTS: Complete data were collected from 683 participants (54.84% women; average age: 60.28 ± 17.02 years). Decreasing vision was associated with increasing costs (p < 0.001). Most costs were incurred by informal support from relatives, which was the most important resource for coping with everyday life for people with visual loss. Together with assistive/medical devices and loss of productivity due to disability, informal support accounted for 80% of total costs. Extrapolated to Germany, the annual costs of blindness and visual impairment from a societal perspective amounted to € 49.6 billion. Results of the sensitivity analyses and 95% confidence intervals showed a considerable degree of uncertainty. CONCLUSION: Visual impairment and blindness may cause enormous overall costs from a societal point of view, as shown here for Germany. Our findings on the costs of blindness and visual impairment in Germany add in a number of different ways to the international evidence. In particular, results show that a large proportion of the costs are not obvious per se as it is caused by self-paid deductibles, productivity loss, early retirement and informal support/care by relatives. Further research should make special efforts to investigate these costs precisely as well as their influence factors.
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