The goal of this clinical trial is to evaluate the feasibility of using virtual reality based visual field testing to monitor glaucoma in a clinical setting. This will be done through comparison of a virtual reality (VR) based device to the current gold standard Ziess Humphrey Field Analyzer (HFA). The main questions the study aims to answer are: * Can both devices produce similar results in terms of detecting visual field defects and progression? * Does the stage (early, moderate, advanced) of glaucoma impact results between the two devices? Participants will perform both a standard and a VR based visual field test at each visit, for a total of 5 visits.
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Visual field point-wise threshold values
Timeframe: Measured during each visual field test on visits 1 through 5 (throughout study completion, average 2 months)
Global indices of visual field loss
Timeframe: Measured during each visual field test on visits 1 through 5 (throughout study completion, average 2 months)
Reliability Indices
Timeframe: Measured during each visual field test on visits 1 through 5 (throughout study completion, average 2 months)