Low vision and the risk of dementia: a nationwide population-based cohort study

In this longitudinal nationwide study, we analyzed the risk of incident AD and VD according to visual function. Previously, there are very few studies that provide a large sample of adults with data on visual acuity and dementia incidence and diagnosis with consecutive follow-up data. The National Health Insurance System (NHIS) of Korea enables us to analyze a large dataset to examine and address the association between poor vision and dementia incidence. We also considered confounding factors including age, sex, smoking, drinking, exercise, diabetes, hypertension, and lipids levels. In addition, this study examines interactions between the covariates and poorer vision which adds a significant and important piece to address the various inconsistencies reported in the literature on vision and dementia and provides an overall picture on how other risk factors may interact with vision…