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    • National Health and Aging Trends Study (NHATS) – Vision and Eye Health Surveillance System (VEHSS)

    Metadata Updated: May 16, 2025

    VEHSS analyzed NHATS public use data to calculate the prevalence of visual acuity and contrast sensitivity loss. Data are based on NHATS round 12, which was collected in 2022. We defined subgroup thresholds based on the VEHSS case definitions for Vision Loss and Blindness.

    NHATS is a health examination survey conducted on a nationally representative sample of Medicare beneficiaries aged 65 years and older. Surveys are conducted each year through in-person interviews. Vision-related tests of distance acuity, near-distance acuity, and contrast sensitivity are conducted with the aid of a computer tablet. Because participants wear their usual eyewear for vision assessments, acuity estimates are based on presenting acuity.

    These data are also available in the VEHSS Data Explorer, and interactive data visualization tool reporting prevalence information from more than 10 data sources: https://www.cdc.gov/vision-health-data/index.html

    Access & Use Information

    Public: This dataset is intended for public access and use. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date April 11, 2025
    Metadata Updated Date May 16, 2025

    Metadata Source

    Harvested from Healthdata.gov

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date April 11, 2025
    Metadata Updated Date May 16, 2025
    Publisher Centers for Disease Control and Prevention
    Maintainer
    Identifier https://data.cdc.gov/api/views/qktg-6dmb
    Data First Published 2025-05-15
    Data Last Modified 2025-05-15
    Category Vision & Eye Health
    Public Access Level public
    Bureau Code 009:20
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://healthdata.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id cc184161-7dfb-4370-a047-2505c5cf6682
    Harvest Source Id 651e43b2-321c-4e4c-b86a-835cfc342cb0
    Harvest Source Title Healthdata.gov
    Homepage URL https://data.cdc.gov/d/qktg-6dmb
    License http://opendatacommons.org/licenses/by/1.0/
    Program Code 009:020
    Source Datajson Identifier True
    Source Hash dfc545d20a8885b9b952eb69dcdc7b53c01a3284677b7ec8c8b24ee075eb4f3d
    Source Schema Version 1.1

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