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Related Experiment Video

Updated: Apr 24, 2026

Author Spotlight: An Automated Method for Assessing Visual Acuity in Infants and Toddlers Using an Eye-Tracking System

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Published on: March 17, 2023

Virtually controlled computerised visual acuity screening in a multilingual Indian population.

Omana Keasry Sreelatha¹, S Ve Ramesh², Judy Jose³

¹Department of Optometry, School of Allied Health Sciences, Manipal University, Manipal, Karnataka, India. srlatha@yahoo.com.

Rural and Remote Health

|September 6, 2014

Summary

Tele-based visual acuity (VA) testing is effective in multilingual populations. This remote method, using native languages, shows results comparable to in-person eye exams.

Keywords:

Allied Health Asia Medical Ophthalmology Procedures Public Health

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Area of Science:

Ophthalmology
Optometry
Telemedicine

Background:

Assessing the efficacy of tele-based visual acuity (VA) examination in a hospital-based multilingual population.
Study conducted with subjects from Manipal University and Kasturba Medical College, India.

Purpose of the Study:

To evaluate the effectiveness of remote VA measurement using a computerized chart and video-conferencing.
To compare tele-based VA testing with traditional face-to-face methods in a diverse linguistic setting.

Main Methods:

Randomized comparison of computerized VA chart (COMPlog) using telemethod versus face-to-face method.
Remote operation of the VA chart and subject interaction via video-conferencing (Lync software).
Instructions provided in the subject's preferred language (Kannada, Malayalam, or English).

Main Results:

96 subjects from three language groups participated; mean age 40.3±14.1 years.
Bland-Altman analysis showed good agreement between tele-method and face-to-face VA measurements (mean difference 0.00 logMAR).
High intra-class correlation (0.912) and agreement across language groups (kappa>0.7) were observed.

Conclusions:

Tele-based VA measurement, including native dialect communication, is comparable to conventional face-to-face methods.
Digital VA testing systems integrated with native language support are suitable for tele-eyecare models.