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Repeatability and Concordance of VA Measured With ETDRS Numeric , Landolt C, and Letter Charts in Thai Individuals

NCT02810665 · Status: UNKNOWN · Type: OBSERVATIONAL · Enrollment: 180

Last updated 2016-06-23

No results posted yet for this study

Summary

This is a cross-sectional study to determine the repeatability and concordance of visual acuity level measured with the original ETDRS letter, ETDRS Landolt C, and ETDRS numeric chart in Thai individuals.

Conditions

  • Visual Nonspecific

Interventions

BEHAVIORAL

Visual acuity measurement by ETDRS chart

All participants must complete VA measurement of the study eye using 3 charts including the original ETDRS alphabet, ETDRS Landolt C, and ETDRS numeric charts for 2 times, at least 30 minutes apart.

Sponsors & Collaborators

  • Chiang Mai University

    lead OTHER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2015-07-31
Primary Completion
2016-07-31
Completion
2016-07-31

Countries

  • Thailand

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02810665 on ClinicalTrials.gov