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.
>18 years of age
diagnosis of primary open-angle glaucoma
ability to perform visual field testing
capacity to provide informed consent to research protocol
diagnosis of secondary glaucoma or non-glaucomatous optic neuropathy
previous intraocular surgery (excluding cataract surgery and minimally invasive glaucoma surgery)
significant media opacity
pregnancy