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  1. Kee QT, Abd Rahman MH, Mohamad Fadzil N, Mohammed Z, Shahar S
    BMC Res Notes, 2021 Oct 24;14(1):395.
    PMID: 34689826 DOI: 10.1186/s13104-021-05813-3
    OBJECTIVE: Near visual impairment (VI) is a common disability in an aging population. Near vision is crucial in activity of daily living including reading, smartphone and computer use and meal preparation. This study was conducted to determine the association between near visual acuity (VA) and contrast sensitivity (CS) with activity of daily living (ADL) among visually impaired older adults.

    RESULTS: A total of 208 participants aged  ≥  60 were recruited from the population-based longitudinal study on neuroprotective model for healthy longevity. Habitual near VA and CS were measured using Lighthouse near VA chart and Pelli-Robson CS chart, respectively. Lawton instrumental activities of daily living (IADL) was used to assess ADL. There are 41.8% participants with near visual impairment and 28.7% among them had IADL disability. Independent t test showed significant lower mean IADL score among visually impaired participants [t(206)  =  2.03, p  =  0.04]. IADL score significantly correlated with near VA (r  =   - 0.21, p  =  0.05) but not with CS (r  =   - 0.14, p = 0.21). Near VA (B  =   - 0.44, p  =  0.03) and age (B  =   - 0.07, p  =  0.01) significantly predicted IADL. The findings show poorer VA renders higher IADL disability, which may necessitate interventions to improve ADL among visually impaired older adults.

  2. Mohammed Z, Kee QT, Fadzil NM, Abd Rahman MH, Din NC, Mariappan V, et al.
    Int J Ophthalmol, 2023;16(1):115-120.
    PMID: 36659949 DOI: 10.18240/ijo.2023.01.17
    AIM: To determine the association between distance and near visual acuity (VA) and cognitive function among older adults in Selangor, Malaysia.

    METHODS: A total of 230 older adults (age ≥60y) participated in this study. Habitual distance and near VA were measured using the Early Treatment Diabetic Retinopathy Study Chart and Lighthouse Near Visual Acuity Chart, respectively. Global cognitive function was assessed using the Mini-Mental State Examination (M-MSE) and the Malay language version of the Montreal Cognitive Assessment (M-MoCA). Digit Symbol (DS) subtest was used to measure information processing.

    RESULTS: No significant association was observed between vision and M-MSE and M-MoCA scores. However, poor distance and near VA were found to be significantly associated with low DS scores [distance VA: β=-0.01, R 2=0.1, P=0.02; odds ratio (OR)=2.84, 95% confidence interval (CI), 1.10-7.33, P=0.03; near VA: β=-0.05, R 2=0.08, P=0.00; OR=3.32, 95%CI, 1.28-8.59, P=0.01].

    CONCLUSION: Poor vision is associated with a decline in information processing in older adults and substantiates the importance of preserving good vision in maintaining cognitive function.

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