Effect of optical text recognition (OCR) and text-to-speech (TTS) smartphone app on vision-related quality of life in visually impaired people.

Status

Active, not recruiting

Phases

Phase 2

Study type

Interventional

Source

TCTR

Registry ID

TCTR20220921001

Enrollment

Registered

2022-09-21

Start date

2022-10-15

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

Vision-related quality of life of severe visual impairment and blindness people optical character recognition, OCR, text to speech, smartphone applications, vision aids, artificial vision, low vision, visual impairment, blind, vision-related quality of life

Interventions

Using optical text recognition and bilingual(English and Thai) text-to-speech smartphone application for 4 weeks.

Experimental Device

Text-to-speech smartphone application

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: 1. At least 18 years old 2. Severe visual impairment (BCVA better than20/400 but below 20/200) in the better eye 3. Blind (BCVA below 20/400) in the better eye 4. No previous use of a text-to-speech device 5. Able to understand Thai and English 6. Need to read Thai and English text in daily life

Exclusion criteria

Exclusion criteria: - Cognitive impairment and hearing loss - Comorbid disease or neurological or musculoskeletal problems affected using the application and activities of daily living

Design outcomes

Primary

Measure	Time frame
Vision-related quality of life 4 weeks Thai version of The Impact of Vision Impairment	—

Secondary

Measure	Time frame
Satisfaction 4 weeks Satisfaction questionnaire	—

Countries

Thailand

Contacts

Public ContactBenyapa Chatpaitoon

Faculty of Medicine, Chulalongkorn University

benyapa8748@gmail.com022564000

Outcome results

None listed

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