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V-5.1 Data Details

V-5.1 Reduce visual impairment due to uncorrected refractive error

About the Data

Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.

National Data Source
National Health and Nutrition Examination Survey (NHANES); Centers for Disease Control and Prevention, National Center for Health Statistics (CDC/NCHS)
Changed Since the Healthy People 2020 Launch
No
Measure
per 1,000 (age adjusted—see Comments)
Baseline (Year)
136.1 (2005-2008)
Target
122.5
Target-Setting Method
10 percent improvement
Numerator
Number of persons aged 12 years and over whose better-eye distance vision tests at 20/30 or worse, and improves to 20/25 or better after objective auto-refraction.
Denominator
Number of persons aged 12 years and over.
Questions Used to Obtain the National Baseline Data

From the 2005-08 National Health and Nutrition Examination Survey:

[NUMERATOR:]

Measure of visual acuity of left and right eyes with usual correction at examination.

Measure of reported visual acuity of left and right eyes after objective auto-refraction.

Data Collection Frequency
Periodic
Comparable Healthy People 2010 Objective
Retained from HP2010 objective
Methodology Notes

For survey participants aged 12 years and over, NHANES measures distance visual acuity, including the eyeglass or contact lens prescription for persons who use help for distance vision. Visual acuity in a given eye was measured at 20/20, 20/25, 20/30, 20/40, 20/50, 20/60, 20/80, 20/200, or over 20/200.

“Usual correction” includes eyeglasses, contacts, eyeglasses and contacts, or no correction depending on what the sample persons wore (or brought with them) to view distant objects on the day of their visit to the mobile examination center. Objective refraction to allow the eye to see 20/25 or better was performed on persons whose presenting visual acuity was 20/30 or worse in their better eye.

Age Adjustment

This Indicator uses Age-Adjustment Groups:

  • Total: 12-19, 20-39, 40-59, 60+
  • Sex: 12-19, 20-39, 40-59, 60+
  • Race/Ethnicity: 12-19, 20-39, 40-59, 60+
  • Educational Attainment: 25-29, 40-59, 60+
  • Family Income: 12-19, 20-39, 40-59, 60+
  • Country of Birth: 12-19, 20-39, 40-59, 60+
  • Disability Status: 20-39, 40-59, 60+
  • Health Insurance Status: 12-19, 20-39, 40-59, 60-64
  • Diabetes Status: 12-19, 20-39, 40-59, 60+
  • Marital Status: 20-39, 40-59, 60+
  • Veteran Status: 17-19, 20-39, 40-59, 60+
  • Obesity Status, Adults: 20-39, 40-59, 60+