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

> **NCT02810665** · — · UNKNOWN · sponsor: **Chiang Mai University** · enrollment: 180 (estimated)

## Conditions studied

- Visual Nonspecific

## Interventions

- **BEHAVIORAL:** Visual acuity measurement by ETDRS chart

## Key facts

- **NCT ID:** NCT02810665
- **Lead sponsor:** Chiang Mai University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** UNKNOWN
- **Start date:** 2015-07
- **Primary completion:** 2016-07
- **Final completion:** 2016-07
- **Target enrollment:** 180 (ESTIMATED)
- **Last updated:** 2016-06-23


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT02810665

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT02810665, "Repeatability and Concordance of VA Measured With ETDRS Numeric , Landolt C, and Letter Charts in Thai Individuals". Retrieved via AI Analytics 2026-06-01 from https://api.ai-analytics.org/clinical/NCT02810665. Licensed CC0.

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