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Updated: Jun 26, 2025
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Binocular Dynamic Visual Acuity in Eyeglass-Corrected Myopic Patients
Published on: March 29, 2022
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Evaluating the precision of an online visual acuity test tool
Mauro Gobira1,2, Vinícius Freire3, Glauco Sérgio Avelino de Aquino4
1Department of Ophthalmology, Vision Institute, Instituto Paulista de Estudos e Pesquisas em Oftalmologia (IPEPO), São Paulo, SP, Brazil.
Journal of Telemedicine and Telecare
|May 20, 2024
Summary
The Eyecare Visual Acuity Test® accurately measures visual acuity (VA) compared to the Snellen chart. This web-based tool shows potential for remote patient monitoring and telehealth applications in ophthalmology.
Area of Science:
- Ophthalmology
- Medical Technology
- Digital Health
Background:
- Visual acuity (VA) measurement is crucial in ophthalmology.
- Traditional Snellen charts are the gold standard but require in-clinic visits.
- Web-based tools offer potential for remote and accessible VA assessment.
Purpose of the Study:
- To evaluate the precision of the Eyecare Visual Acuity Test®, a web-based tool.
- To compare its performance against the standard in-clinic Snellen chart.
- To assess its suitability for ophthalmic patient evaluations.
Main Methods:
- Prospective, in-clinic validation study.
- Comparison of Eyecare Visual Acuity Test® with Snellen chart in 322 patients.
- Sequential testing with patients wearing their usual spectacles.
- Statistical analysis using Bland-Altman and Pearson correlation.
Main Results:
- No statistically significant mean difference in VA measurements (0.01 logMAR, P=0.1517).
- Narrow 95% limits of agreement (-0.23 to 0.22 logMAR) indicate concordance.
- Significant positive correlation (r=0.61, P<0.001) between the two methods.
Conclusions:
- Eyecare Visual Acuity Test® is accurate and reliable for VA measurement.
- Potential for home monitoring, triage, and remote consultations.
- Further validation needed across diverse age groups and comorbidities.
