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Associations of ophthalmic and systemic conditions with incident dementia in the UK Biobank
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    RE: Associations of ophthalmic and systemic conditions with incident dementia in the UK Biobank

    Shang et al. conducted a prospective study to examine the effect of ophthalmic and systemic conditions on incident dementia (1). The adjusted hazard ratios (HRs) (95% confidence intervals [CIs]) of age-related macular degeneration (AMD), cataract, diabetes-related eye disease (DRED), and glaucoma at baseline for incident dementia were 1.26 (1.05 to 1.52), 1.11 (1.00 to 1.24), 1.61 (1.30 to 2.00), and 1.07 (0.92 to 1.25), respectively. Diabetes, heart disease, stroke and depression at baseline were also significantly associated with an increased risk of dementia. In addition, some combinations of ophthalmic and systemic conditions were at the higher risk for incident dementia. I have a comment about the study.

    Vision impairment is a risk factor of dementia, and poor vision is independently associated with a decline in cognitive function (2). Shang et al. clarified that AMD, cataract, and DRED were risk of incident dementia, and some combinations with systemic conditions accelerated risk of incident dementia. Although glaucoma was not significantly associated with increased risk of al-cause dementia, it was significantly associated with increased risk of vascular dementia. The authors also conducted analysis by excluding data in the first 5 years of follow-up, consistent results were also specified on the combined effects of ophthalmic and systemic conditions on incident dementia. Although the mechanism of increased risk of dementia in combinations with ophthalmic and...

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    Conflict of Interest:
    None declared.