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Vision & Eye Health Data & Maps

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Data Type
Percentage of Adults 18 Years and Older Who Reported Blindness or Severe Difficulty Seeing
Data Type: Crude Prevalence
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We presented crude prevalence estimates. The crude estimate is the raw percentage or the unadjusted estimate. Denominator includes all respondents except those with missing, don't know, and refused answers.
For mapping, quartiles are calculated based on the minimum and maximum values for each indicator.

Measure Definitions

CI = A confidence interval gives an estimated range of values that is likely to include an unknown population parameter.

Suggested Citation

Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Division of Diabetes Translation. Vision & Eye Health Data & Maps [online]. 2016. [accessed Mar 18, 2019]. URL: