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Comparison between the Fast Strategies of a Virtual Reality Perimetry and the Humphrey Field Analyzer in Patients
Fernanda Nicolela Susanna1, Carolina Nicolela Susanna1, Pedro Gabriel Salomão Libânio1
1Ophthalmology Department, Universidade de São Paulo, São Paulo, São Paulo, Brazil.
Purpose:
This study compared the agreement between the Humphrey Field Analyzer (HFA) SITA Fast strategy and a novel virtual reality head-mounted visual perimetry device (VisuALL) in patients with glaucoma.
Design:
This is prospective observational study.
Participants:
This study was conducted on 62 eyes of 39 glaucoma subjects.
Methods:
All participants had visual field (VF) testing with the VisuALL AVAFAST strategy and the HFA (24-2, Swedish Interactive Threshold Algorithm FAST). The mean sensitivity of the whole VF and each quadrant was compared between both machines. Additionally, the pattern deviation plot was analyzed to compare the agreement of both devices to detect localized VF defects.
Main Outcome Measures:
Correlation and agreement between the mean sensitivity of the fast strategies from VisuALL and HFA.
Results:
The global mean sensitivity of the VisuALL and the HFA correlated significantly (r = 0.60; P < 0.001) and was in agreement (r = 0.73; P < 0.001). The detection of VF defects in all quadrants was also moderately correlated and in agreement. Participants overwhelmingly preferred the VisuALL over the conventional (80%).
Conclusions:
Although the mean sensitivity and ability to detect localized VF defects of the VisuALL were correlated and in agreement with the HFA, this was only moderate. This indicates that the VisuALL AVAFast strategy must be used with caution.
Financial Disclosure(S):
The author(s) have no proprietary or commercial interest in any materials discussed in this article.
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