SmartSystem Virtual Reality Headset Perimeter Versus Humphrey HFA-III Perimeter

The goal of this clinical trial is to compare a new device for testing peripheral vision (the SmartSystem virtual reality headset) to the currently most commonly used standard testing device (the Humphrey HFA-III). The main questions this clinical trials aims to answer are: 1. How comparable in performance, accuracy, and patient comfort the SmartSystem VR headset is to the Humphrey HFA-III, and 2. Surveying patients about the perceived ease of use and patient experience with the SmartSystem VR headset, compared to the Humphrey HFA-III. Participants will be asked to use the SmartSystem VR headset to take an additional visual field test (which takes between 10 to 15 minutes to do) and to take a brief survey about their experience. This will occur on regularly scheduled clinic visits and done in addition to the standard tests and examinations scheduled for that day. Researchers will compare the patients' test results and survey responses for both the SmartSystem VR headset and the Humphrey HFA-III to see which has more favorable performance, reliability, duration of testing and user experience.