May 2003
Volume 44, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2003
Prevalence of Visual Impairment in Latinos. The Los Angeles Latino Eye Study (LALES)
Author Affiliations & Notes
  • S.P. Azen
    Preventive Medicine, USC Keck Sch of Med, Los Angeles, CA, United States
  • M. Torres
    Preventive Medicine, USC Keck Sch of Med, Los Angeles, CA, United States
  • R. Klein
    Ophthalmology and Vision Science, University of Wisconsin, Madison, WI, United States
  • R. Varma
    Ophthalmology and Vision Science, University of Wisconsin, Madison, WI, United States
  • LALES Group
    Ophthalmology and Vision Science, University of Wisconsin, Madison, WI, United States
  • Footnotes
    Commercial Relationships  S.P. Azen, None; M. Torres, None; R. Klein, None; R. Varma, None.
  • Footnotes
    Support  NEI #U10 EY11753
Investigative Ophthalmology & Visual Science May 2003, Vol.44, 1276. doi:
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      S.P. Azen, M. Torres, R. Klein, R. Varma, LALES Group; Prevalence of Visual Impairment in Latinos. The Los Angeles Latino Eye Study (LALES) . Invest. Ophthalmol. Vis. Sci. 2003;44(13):1276.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Abstract: : Purpose: To determine the age-, and gender-specific prevalence of visual impairment in a population-based sample of adult Latinos in urban Los Angeles County, California. Methods:The LALES is a population-based prevalence study of eye disease among Latinos aged 40 and older. All participants underwent a complete ophthalmologic examination including presenting and best-corrected distance visual acuity using a standard ETDRS protocol. Statistical analyses were conducted to determine the prevalence rates of visual impairment (defined as visual acuity of 20/40 or worse) using two criteria: a) presenting binocular visual acuity (PBVA) and b) best-corrected visual impairment in the better eye (BCVA). The relationship of age and gender to visual impairment was explored using logistic regression and Mantel-Haenszel procedures. Results: Of the 5,679 participants who were examined, the overall prevalence rates of visual impairment based on PBVA and BCVA were 6.6% and 2.9%, respectively. Uncorrected refractive error was the cause of visual impairment in 5.4% of the cases. Visual impairment based on PBVA was significantly greater in older participants (RR = 1.0, 1.9, 4.3, 9.2, 31.7 for 40-49, 50-59, 60-69, 70-79, and 80+ years, respectively; p<0.0001); females were more likely to have visual impairment than males (RR = 1.4, p=0.002). Visual impairment based on BCVA was also significantly greater in older participants (RR = 1.0, 1.3, 5.7, 18.4, 58.6 for 40-49, 50-59, 60-69, 70-79, and 80+ years respectively; p<0.0001); females were more likely to have visual impairment than males (RR = 1.1, p=0.02). Mantel-Haenszel analyses revealed that age and gender were independently related to visual impairment (p=0.018 and p<0.001 respectively). Conclusions:Overall prevalence rates of visual impairment are lower than those seen in whites (Beaver Dam study) and blacks (Barbados and Baltimore Eye studies). Regardless of the criterion for determining visual impairment, older individuals and females were more likely to be visually impaired.

Keywords: visual acuity • clinical (human) or epidemiologic studies: pre • aging: visual performance 
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