Evidence map›Paper›PMID 31440424›Full record

ArticleTranslational vision science & technology2019

Development and Validation of a Smartphone-Based Visual Acuity Test (Vision at Home).

Xiaotong Han, Jane Scheetz, Stuart Keel, Chimei Liao, Chi Liu, Yu Jiang, Andreas Müller, Wei Meng, Mingguang He

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Translational vision science & technology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05223569 (Home Monitoring of Diabetic Macular Edema), which is not on this map. Cited by 37 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 4 pooled it
5.1field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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.

NCT05223569 naunknown statusnot on this mapstarted 2022, after this paper: background citation

Home Monitoring of Diabetic Macular Edema

TypeinterventionalSponsorZhongshan Ophthalmic Center, Sun Yat-sen UniversityRan2022 to 2024Enrolled120ConditionsMacular Edema Due to Diabetes MellitusArmsHome OCT monitoring model, Hospital-based monitoring with a staff-administrated OCT
3 · Its place in the literature

Who cites it

37 citing papers in PubMed, 4 syntheses or guidelines pooled it, 65 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
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  5. From Screening to Care: Delayed Clinical Follow-up After Childhood Myopia Identification and the Design of a Prospective Intervention Study.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2026
    Trial
  6. Trial
  7. Validity and Reliability of WHOeyes Application in Community-based Visual Acuity Screening Program.Indian journal of community medicine : official publication of Indian Association of Preventive & Social Medicine · 2026
    Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Innovative myopic screening platform based on smartphones.Frontiers in bioengineering and biotechnology · 2025
    Article
  14. Article
  15. Article
  16. Estimating Visual Acuity Without a Visual Acuity Chart.Translational vision science & technology · 2024
    Article
  17. Review
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 2 countries.

Xiaotong HanCentre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, Melbourne, Australia.
Jane ScheetzCentre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, Melbourne, Australia.
Stuart KeelCentre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, Melbourne, Australia.
Chimei LiaoState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.
Chi LiuState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.
Yu JiangState Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China.
Andreas MüllerCentre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, Melbourne, Australia.
Wei MengGuangzhou Healgoo Interactive Medical Technology Co. Ltd., Guangzhou, China.
Mingguang HeCentre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, Melbourne, Australia.
Centre for Eye Research Australia · AUSun Yat-sen University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo describe the development and validation of a smartphone-based visual acuity (VA) test called Vision at home (V@home).

methodsThree study populations (elderly Chinese, adolescent Chinese, and Australian groups) underwent distance and near VA testing using standard Early Treatment Diabetic Retinopathy Study (ETDRS) charts and the V@home device; all VA tests used tumbling E optotypes. VA tests were repeated with one eye, selected randomly. Distance VA was measured monocularly at 2 m, and near VA was measured binocularly at 40 cm. Participants also completed a questionnaire about their satisfaction with the device. V@home VA (logMAR) was compared to VA for ETDRS charts at distance and near and test-retest reliability.

resultsThe mean difference between V@home and ETDRS distance VA across all groups ranged from -0.010 to -0.100 logMAR. Tolerant weighted kappa (TWK) agreement ranged from substantial (0.742) in the Australian group to almost perfect (0.950) in the adolescent Chinese group. There was high agreement of V@home with near ETDRS VA across all groups, with a mean difference of -0.092 to -0.042 logMAR and a TWK of 0.736 to 0.837. Test-retest reliability was also high (difference: -0.018 to 0.026) for both distance and near VA tests (95% limits of agreement: -0.289 to 0.258 for distance and -0.235 to 0.199 for near). The majority of participants were satisfied with V@home.

conclusionsV@home could accurately and reliably measure both distance and near VA and is well accepted by participants. TRANSLATIONAL RELEVANCE: The V@home system could potentially serve as a useful tool to improve eye care accessibility, especially in underdeveloped areas with limited eye care personnel and resources.

Indexed as

developmentETDRSsmartphone-basedvisual acuity test

Identifiers

PMID31440424
PMCPMC6701871
OpenAlexW2969916503

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

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.