ArticleThe British and Irish orthoptic journal2020
Does the EyeChart App for iPhones Give Comparable Measurements to Traditional Visual Acuity Charts?
Article in The British and Irish orthoptic journal, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
What it found
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
9 citing papers in PubMed, 17 citations in OpenAlex.
- Enhancing access and clinical triage in primary eye care through digital vision testing: validation of the SightConnect mobile application.Frontiers in digital health · 2026Article
- Mobile Apps and Visual Function Assessment: A Comprehensive Review of the Latest Advancements.Ophthalmology and therapy · 2025Review
- User-Centred Design and Development of a Smartphone Application (Healthcare (Basel, Switzerland) · 2024Article
- Smart Devices in Optometry: Current and Future Perspectives to Clinical Optometry.Clinical optometry · 2024Review
- The Accuracy of a Web-Based Visual Acuity Self-assessment Tool Performed Independently by Eye Care Patients at Home: Method Comparison Study.JMIR formative research · 2023Article
- Digital Tools for the Self-Assessment of Visual Acuity: A Systematic Review.Ophthalmology and therapy · 2021Review
- Evaluation of a New Method to Track Changes in Vision at Home for Children Undergoing Amblyopia Treatment.The British and Irish orthoptic journal · 2021Article
- Comparison of smartphone application-based visual acuity with traditional visual acuity chart for use in tele-ophthalmology.Taiwan journal of ophthalmologyArticle
- Standardization of distance visual acuity measurement using optonet computerized vision charts: A multicentric study.Journal of optometryArticle
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimTo investigate if the EyeChart app gives accurate visual acuity (VA) measurements that are comparable to those achieved using traditional VA charts.
methodTwenty-four participants (aged 18-27 years, mean 20.13 ± 1.78 years) with VA of 6/60 Snellen or better regardless of any strabismus, amblyopia, or ocular pathology volunteered for this prospective study. The best-corrected monocular VA of each participant's right eye was measured on the Snellen chart at 6 m, the ETDRS chart at 3 m, and the EyeChart app presented on an iPhone SE at 1.2 m (4ft).
resultsThe mean VA scores obtained were: -0.13 ± 0.08 logMAR on the Snellen chart, -0.11 ± 0.08 logMAR on the ETDRS chart, and -0.09 ± 0.07 logMAR on the EyeChart app. After Bonferroni Correction adjustments were applied, a significant difference was found between the EyeChart app and the Snellen chart (t = -3.756, p = 0.003), however the difference between the EyeChart app and the ETDRS chart did not reach statistical significance (t = -2.391, p = 0.076). The EyeChart app had a strong correlation with both the Snellen (r = 0.79, p < 0.01) and ETDRS charts (r = 0.88, p < 0.01). The Coefficients of Agreement revealed a variation of less than one logMAR line between the EyeChart app and the traditional VA charts (Snellen: 0.09 logMAR; ETDRS: 0.08 logMAR).
conclusionThis study found that the EyeChart app gives accurate VA scores that are comparable to those achieved using the gold-standard ETDRS chart in a healthy young adult population. However, the accuracy and repeatability of the EyeChart app when testing a patient population must be investigated before it can be integrated into clinical practice.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.