ArticleEye (London, England)2023
Online circular contrast perimetry via a web-application: optimising parameters and establishing a normative database.
Article in Eye (London, England), 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 8 papers.
What it found
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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.
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
8 citing papers in PubMed.
- Online circular contrast perimetry performed in glaucoma patients in Sub-Saharan Africa: a multi-centre comparative study in Nigeria.Eye (London, England) · 2026Article
- Glaucoma Home Monitoring Using Online Circular Contrast Perimetry Over 6 Months: Performance and Patient Attitudes in the Developing World Setting.Clinical ophthalmology (Auckland, N.Z.) · 2025Article
- Development and Validation of an Internet-Based Remote Perimeter (Perimouse).Translational vision science & technology · 2024Article
- Online Circular Contrast Perimetry via a Web-Application: Establishing a Normative Database for Central 10-Degree Perimetry.Clinical ophthalmology (Auckland, N.Z.) · 2024Article
- Glaucoma Clinic Monitoring Over 6 Months Using Online Circular Contrast Perimetry in Comparison with Standard Automatic Perimetry: The Developing-World Setting.Clinical ophthalmology (Auckland, N.Z.) · 2024Article
- Circular Contrast Perimetry via Web Application: A Patient Appraisal and Comparison to Standard Automated Perimetry.Ophthalmology science · 2022Article
- Evaluating the Consistency of Online Circular Contrast Perimetry Across Different Computer Monitors: A Cross-sectional Study.Journal of current glaucoma practiceArticle
- Utilizing Artificial Intelligence for Enhancing Glaucoma Care.Journal of current glaucoma practiceArticle
Corrections and comments
- Erratum issued
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo establish a normative database and optimise parameters for personal-computer based perimetry via a web-application using circular contrast targets.
methodsOnline 24-degree 52-loci perimetry was delivered through a web-application using circular flickering contrast targets. Embedding contrast differentials within targets allows calculation of relative decibel (rdB) per 256-bit greyscale level differential. Target light-band maximum brightness colour was fixed, while the dark-band varied to achieve the desired rdB level. A staircase system was used with two reversals ranging from 0 to 36 rdB levels. Blind spot localisation at the start of the test was used to optimise viewing distance and subsequently count fixation losses. Gaze was maintained on a spinning golden star which moves mid-test to maximise sampling area. Patients performed the test to each eye separately using a computer in a darkened room at 40-45 cm.
results158 eyes of 101 patients completed the Online Circular Contrast Perimetry (OCCP) test. Mean age was 62.9 ± 14.3 years old. Mean sensitivity reduced with age, at 1.0 relative decibel per decade. Mean sensitivity per locus correlated with standard automated perimetry (SAP) in a physiological hill of vision, with an average difference of 4.02 decibels (95% confidence interval (CI) = 3.77-4.27, p < 0.001) and good agreement between tests.
conclusionsOnline circular contract perimetry provides accurate perimetric testing with comparable results to standard automated perimetry.
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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.