Cumulative Effect of Visual Impairment, Multimorbidity, and Frailty on Intrinsic Capacity in Community-Dwelling Older Adults

Objectives: We aim to determine the prevalence of vision impairment (VI) and its cumulative impact on multimorbidity, frailty, physical and cognitive function, and quality of life. Method: In all, 780 community-dwelling older adults were interviewed for demographic data and a one-off physical activity screening. Covariate measurements include vision via Snellen chart, multimorbidity, five-item FRAIL (Fatigue, Resistance, Ambulation, Illnesses, & Loss of Weight) scale and Mini-Mental State Examination (MMSE). Outcome variables taken were Barthel Index, Lawton Instrumental Activities of Daily Living (IADL) scale, grip strength, Timed Up and Go (TUG), and EuroQol 5D (EQ-5D). Results: In all, 426 (54.6%) were female, mean age was 71.3 ± 0.2 years; 240 (30.8%) had VI. The interaction between VI, multimorbidity, and frailty significantly impacts grip strength, TUG, quality of life, and IADL. Discussion: Our study is the first to look at the interaction of VI, multimorbidity, frailty, and its combined impact on key domains of intrinsic capacity. Our results further support vision screening to enable aging in place and highlight importance of screening for frailty and cognition in those with VI.