The relationship between age-related eye diseases and the subsequent risk of dementia and depressive disorders remains inconsistent. Furthermore, the effects on anxiety disorders and sleep disorders have been underexplored. This study aims to comprehensively examine the impact of age-related eye diseases on common mental disorders in older adults, thereby enhancing our understanding of the mental health implications in these conditions. The electronic health records of 1,522,036 patients aged over 60 from ten institutions in South Korea were analyzed. Patients with and without age-related eye diseases were identified, and 1:4 propensity score matching (PSM) was implemented. A 10-year longitudinal analysis was conducted using the Cox proportional hazards model to calculate the hazard ratios (HR). A meta-analysis was performed to combine the results from different institutions. Subgroup analyses were conducted to explore the impact of specific age-related eye diseases (cataract, glaucoma, age-related macular degeneration) on mental disorders. A total of 41,637 patients with age-related eye disease were matched with 134,908 patients without such conditions. Patients with age-related eye disease showed a significantly higher risk of mental disorders (dementia, HR: 1.21 [95% CI: 1.14-1.27]; depressive disorders, HR: 1.28 [95% CI: 1.20-1.36]; anxiety disorders, HR: 1.31 [95% CI: 1.22-1.41]; sleep disorders, HR: 1.29 [95% CI: 1.22-1.37]). In subgroup analyses, each of the three age-related eye diseases was significantly associated with an increased risk of mental disorders. (cataract, HR: 1.25-1.33; glaucoma, HR: 1.15-1.49; age-related macular degeneration, HR: 1.18-1.37). Age-related eye diseases increase the risk of developing mental disorders in older adults, highlighting the need for a multidisciplinary approach to patient care in these conditions.
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