Phillip H Hwang1, Will T Longstreth1,2, Stephen M Thielke3,4, Courtney E Francis5, Marco Carone6, Lewis H Kuller7, Annette L Fitzpatrick1,8,9. 1. Department of Epidemiology, University of Washington, Seattle, Washington, USA. 2. Department of Neurology, University of Washington, Seattle, Washington, USA. 3. Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, Washington, USA. 4. Geriatric Research, Education, and Clinical Center, Puget Sound VA Medical Center, Seattle, Washington, USA. 5. Department of Ophthalmology, University of Washington, Seattle, Washington, USA. 6. Department of Biostatistics, University of Washington, Seattle, Washington, USA. 7. Department of Epidemiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA. 8. Department of Global Health, University of Washington, Seattle, Washington, USA. 9. Department of Family Medicine, University of Washington, Seattle, Washington, USA.
Abstract
INTRODUCTION: Ophthalmic conditions and dementia appear to overlap and may share common pathways, but research has not differentiated dementia subtypes. METHODS: Diagnoses of cataracts, age-related macular degeneration (AMD), diabetic retinopathy (DR), and glaucoma were based on medical histories and International Classification of Diseases, Ninth Revision (ICD-9) codes for 3375 participants from the Cardiovascular Health Study. Dementia, including Alzheimer's disease (AD) and vascular dementia (VaD), was classified using standardized research criteria. RESULTS: Cataracts were associated with AD (hazard ratio [HR] = 1.34; 95% confidence interval [CI] = 1.01-1.80) and VaD/mixed dementia (HR = 1.41; 95% CI = 1.02-1.95). AMD was associated with AD only (HR = 1.87; 95% CI = 1.13-3.09), whereas DR was associated with VaD/mixed dementia only (HR = 2.63; 95% CI = 1.10-6.27). DISCUSSION: Differential associations between specific ophthalmic conditions and dementia subtypes may elucidate pathophysiologic pathways. Lack of association between glaucoma and dementia was most surprising from these analyses.
INTRODUCTION: Ophthalmic conditions and dementia appear to overlap and may share common pathways, but research has not differentiated dementia subtypes. METHODS: Diagnoses of cataracts, age-related macular degeneration (AMD), diabetic retinopathy (DR), and glaucoma were based on medical histories and International Classification of Diseases, Ninth Revision (ICD-9) codes for 3375 participants from the Cardiovascular Health Study. Dementia, including Alzheimer's disease (AD) and vascular dementia (VaD), was classified using standardized research criteria. RESULTS: Cataracts were associated with AD (hazard ratio [HR] = 1.34; 95% confidence interval [CI] = 1.01-1.80) and VaD/mixed dementia (HR = 1.41; 95% CI = 1.02-1.95). AMD was associated with AD only (HR = 1.87; 95% CI = 1.13-3.09), whereas DR was associated with VaD/mixed dementia only (HR = 2.63; 95% CI = 1.10-6.27). DISCUSSION: Differential associations between specific ophthalmic conditions and dementia subtypes may elucidate pathophysiologic pathways. Lack of association between glaucoma and dementia was most surprising from these analyses.
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