Vision Impairment Linked with High all cause mortality, finds lancet Study
As populations continue to age, the prevalence of vision impairment and blindness are projected to more than double over the next 30 years. In a recent study, researchers have reported that those with vision impairment are at high risk of all-cause mortality than those with normal vision. The research has been published in THE LANCET Global Health on February 16, 2021.
The impacts of vision impairment and blindness are wide-reaching, including an increased risk of falls, cognitive impairment and dementia, depression, disability, and loss of independence. However, an improved understanding of the association between vision impairment and mortality is needed to inform public policy, public health planning, and allocation of limited health-care resources. Therefore, Dr Joshua R Ehrlich, MD and team conducted a study to systematically identify studies describing the association between vision impairment and mortality and to assess the association between vision impairment and all-cause mortality.
It was a systematic review and meta-analysis, in which researchers searched MEDLINE (Ovid), Embase, and Global Health database for prospective and retrospective cohort studies that measured the association between vision impairment and all-cause mortality in people aged 40 years or older who were followed up for 1 year or more. They identified 3845 articles, of which 28 studies, representing 30 cohorts from 12 countries and included them in the systematic review. For the meta-analysis, they included 17 studies, representing 18 cohorts. They graded the overall certainty of the evidence using the Grading of Recommendations, Assessment, Development and Evaluations framework. They conducted a random-effects meta-analysis to calculate pooled maximally adjusted hazard ratios (HRs) for all-cause mortality for individuals with a
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