Development and validation of the Thai version of the MNREAD visual acuity charts

Thai version of the MNREAD visual acuity charts

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

TCTR

Registry ID

TCTR20200715003

Enrollment

Registered

2020-07-15

Start date

2020-07-20

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

normal vision and low vision

Interventions

Chart creation and evaluation of the validity of Thai version of the MNREAD visual acuity charts

Experimental Device

Thai version of the MNREAD visual acuity charts

Eligibility

Sex/Gender

All

Age

8 Years to 40 Years

Inclusion criteria

Inclusion criteria: 1. Native Thai speaker, consist of pediatrics group 8 years old and adults group 18-40 years olds. 2. 6/6 (0.0 LogMAR) degree binocularly in both eye with correction, based on the Early Treatment Diabetic Retinopathy Study (ETDRS) chart for distant visual acuity and the Rosenbaum pocket vision screener chart for near visual acuity. 3. Provision of informed consent or informed assent.

Exclusion criteria

Exclusion criteria: 1. Eye pathology, including strabismus. 2. Reading problem.

Design outcomes

Primary

Measure	Time frame
Thai version of the MNREAD visual acuity charts within 12 months after starting development of Thai version of the MNREAD visual acuity charts MNREAD chart design principles	—

Secondary

Measure	Time frame
none none none	—

Countries

Thailand

Contacts

Public ContactSongporn Srinut

Ophthalmology department, Faculty of medicine, Chiang Mai university

nu.songporns@gmail.com0950952444

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026