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  • Title: The determinants of participation in activities of daily living in people with impaired vision.
    Author: Lamoureux EL, Hassell JB, Keeffe JE.
    Journal: Am J Ophthalmol; 2004 Feb; 137(2):265-70. PubMed ID: 14962415.
    Abstract:
    PURPOSE: To investigate the determinants of participation in daily activities in people with impaired vision using the Impact of Vision Impairment (IVI) instrument. DESIGN: Cross-sectional study. METHODS: We recruited 319 participants with no vision rehabilitation history, distance visual acuity (VA) <6/12 (better eye), the ability to converse in English, and 18 years or older. Participants completed the 32-item IVI questionnaire and provided demographic, personal, cultural, and environmental details on vision-related functioning. Visual acuity data were either abstracted from the participants' files or assessed by qualified personnel. Participants also completed the SF-12 to evaluate physical (PCS-12) and mental health (MCS-12). RESULTS: The areas of greatest restriction of participation were associated with reading, outdoor mobility, participation in leisure activities, and shopping. In stepwise linear regression presenting VA, the PCS-12 and MCS-12 explained the variance in leisure and work (60 participants or 19%), consumer and social interaction (92 participants or 30%), household and personal care (76 participants or 24%), mobility (92 participants or 30%), emotional reaction to visual loss and (106 participants or 33%), and total IVI score (114 participants or 36%). Having age-related macular degeneration contributed marginally to the IVI domains and total score (P <.05-.01), except for the emotional domain. Belonging to a social group explained 3% and 2% of the variance in the consumer and social interaction and emotional domains, respectively (P <.05). CONCLUSIONS: Distance VA and physical and mental health explained more than a third of the variance of the total score, suggesting that an intervention aimed at improving quality of life may include strategies to improve not only vision-related rehabilitation but also mental and physical health.
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