Perimetric Testing With Virtual Reality

Procedures: 1. Ophthalmic screening: (a) Visual acuity, slit lamp exam, rebound tonometry (all subjects) 2. OCT examination of the study eye with the Topcon Maestro2 Optical Coherence Tomography (OCT): (a) Standard Retinal Nerve Fiber Layer (RNFL), Optic Disc and Ganglion Cell Complex (GCC) scan patterns (i) Fundus photo is automatically obtained. (b) Abnormalities consistent with ophthalmic disease will be an exclusion for the healthy group of subjects. Reasonable and common artifacts that do not significantly impair the scan report will be accepted. (c) OCT abnormalities consistent with glaucoma are expected on the 30 glaucoma subjects. 3. Once eligible, each patient will perform four (4) visual field tests: (a) once with the HFA Swedish Interactive Threshold Algorithm (SITA) Standard 24-2 pattern (i) Reliability criteria: False Positives no higher than 15% (b) three tests with the VR headset: (i) two tests with ZEST strategy (ii) one test with gamified ZEST strategy (c) Counter-balancing will be used to determine the order of (a) and (b). In particular, a study participant will either start with the HFA visual field test and then proceed to the three tests with the VR headset; or, start with the three VR tests and finish with the HFA visual field test. The sequence of the visual field tests for each study ID will be provided by the sponsor.