George Y.X. Kong PhD, FRANZCO , Mohamed Dirani PhD, MBA , Joyce Tiang MOrthoptics , Selwyn M. Prea OD, PhD , Phillip Bedggood PhD , Algis J. Vingrys PhD
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引用次数: 0
Abstract
Purpose
To evaluate the reliability and concordance of visual field (VF) assessments conducted unsupervised at home using the web-browser-based Melbourne Rapid Fields (MRF) online perimetry system, in comparison with conventional supervised clinic-based Humphrey Field Analyzer Swedish Interactive Threshold Algorithm (SITA)-Faster (HFA-SFr) testing.
Design
Prospective observational comparison study.
Subjects/Participants
Fifty-three glaucoma patients.
Methods
Fifty-three patients with glaucoma with prior experience using MRF platform were recruited. Participants completed bilateral 24-2 white-on-white automated perimetry tests at home using the MRF online system on their own personal computers. Humphrey Field Analyzer SITA-Faster results from the most recent clinic visits served as the comparator. Data from the first 3 months of home monitoring were analyzed in this study. Test–retest variability and agreement between MRF and HFA-SFr were analyzed using Bland–Altman plots and intraclass correlation coefficients (ICCs). Regional analysis was conducted using Garway-Heath structurally defined zones.
Main Outcome Measures
Mean deviation (MD), pattern deviation/pattern standard deviation (PD/PSD), test–retest variability, agreement between home-based MRF and clinic-based HFA-SFr, and regional visual field variability.
Results
Participants comprised 19 preperimetric, 23 early, 6 moderate, and 5 advanced glaucoma cases. Visual field testing with MRF performed at home showed strong correlation for mean deviation (MD) values with HFA-SFr (ICC = 0.905) and moderate correlation for pattern deviation (PD)/pattern standard deviation (ICC = 0.685). Test–retest for MRF also showed strong correlation for MD (ICC = 0.983) and PD/pattern standard deviation (ICC = 0.947). Test–retest variability between MRF tests found a bias of –0.18 dB and 95% limits of agreement of (–2.97, 2.62 dB) for MD, and a bias of +0.21 dB and 95% limits of agreement of (–2.29, 2.68 dB) for PD. Zone-specific analysis showed that the temporal zone has a higher degree of test–retest variability compared with other zones.
Conclusions
Melbourne Rapid Fields online perimetry is a reliable and clinically valid tool for monitoring VF at home in glaucoma cases. Future study of a larger sample size and a more diverse cohort is required to assess its potential for teleophthalmology management of glaucoma and earlier detection of disease progression.
Financial Disclosure(s)
Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.