Trends in visual acuity impairment in US adults: the 1986-1995 National Health Interview Survey.
OBJECTIVE
To assess 10-year trends in reported visual impairment.


METHODS
The National Health Interview Survey is a continuous multistage area probability survey of the US civilian noninstitutionalized population living at addressed dwellings. Adults within randomly selected households were administered a chronic conditions list that included questions about visual impairment. Proxy information on these conditions was obtained when household members were unavailable for interview. Complete data were available on 132 860 adults 18 years or older in survey years 1986 to 1995. Prevalence rates were adjusted for age and sample survey design.


RESULTS
Annual age-adjusted rates of some visual impairment ranged from 3.6% to 4.6%. Rates of severe bilateral visual impairment ranged from 0.2% to 0.4%. There was some evidence for increasing rates of visual impairment among younger adults 18 to 39 years of age (annual increase, 0.03%; P =.03). However, there were no significant changes in reported visual impairment rates in older adults stratified into 10-year age groups.


CONCLUSIONS
Data from the National Health Interview Survey provide no evidence that reported visual impairment rates are declining in the US noninstitutionalized population from 1986 to 1995. Additional treatment advances, greater use of existing treatments, including correcting refractive errors, and further reductions in risk factors for disabling eye diseases may be necessary before population-level reductions in visual impairment rates can be achieved.
Lee
David J
DJ
Department of Epidemiology and Public Health, University of Miami School of Medicine, Highland Professional Building, 1801 NW Ninth Avenue, Room 212-1, Miami, FL 33136, USA. dlee@med.miami.edu
Gómez-Marín
Orlando
O
Lam
Byron L
BL
Zheng
D Diane
DD
Jané
Dulce M
DM
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D006306:Health Surveys; D006801:Humans; D008875:Middle Aged; D009309:National Center for Health Statistics, U.S.; D015995:Prevalence; D014481:United States / Q000453:epidemiology; D014786:Vision Disorders / Q000453:epidemiology*; D014792:Visual Acuity; D019987:Persons with Visual Disabilities / Q000706:statistics & numerical data*