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Invest Ophthalmol Vis Sci. 2011 Sep 29;52(10):7634-9. doi: 10.1167/iovs.11-7725.

Literacy is an independent risk factor for vision impairment and poor visual functioning.

Author information

1
Singapore Eye Research Institute, Singapore National Eye Centre, Singapore.

Abstract

PURPOSE:

People with limited literacy are at increased risks of chronic systemic conditions. The authors therefore investigated the independent contribution of limited literacy on visual impairment and visual function in a large eye survey in Singapore.

METHODS:

The authors undertook a population-based, cross-sectional study of Asian Malays (≥ 40 years old). Visual impairment was defined as logMAR (logarithm of minimal angle of resolution) visual acuity > 0.30 in the better-seeing eye. Information regarding reading and writing literacy levels and other independent variables, including sociodemographic measures (e.g., education, income), were obtained from a standardized interview. Visual functioning was assessed using a modified and validated version of the Vision-Specific Functioning Scale using Rasch analysis.

RESULTS:

Of the 3280 participants, 553 (16.9%) had inadequate reading literacy and 688 (21.0%) had inadequate writing literacy. In multivariate analysis, persons with inadequate reading literacy were more likely to have presenting visual impairment (odds ratio [OR] = 2.66; 95% confidence interval [CI] = 1.91 to 3.72; P < 0.001), best-corrected visual impairment (OR = 2.59; 95% CI = 1.70 to 3.96; P < 0.001), and poorer visual functioning (β coefficient = 0.58; 95% CI = 1.57 to 3.02; P < 0.001), even controlling for education, income, and other patients' characteristics. Similar associations were found for inadequate writing literacy.

CONCLUSIONS:

Inadequate literacy is independently associated with visual impairment and poorer visual functioning. Interventions that address literacy may help to reduce socioeconomic disparities in visual impairment.

PMID:
21873660
DOI:
10.1167/iovs.11-7725
[Indexed for MEDLINE]

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