Assessment of Visual Function With a Portable Brain-computer Interface

The nGoggle is a portable visual evoked potential system that uses an EEG to acquire visual evoked potentials in response to visual stimuli presented on a virtual reality goggle. The investigators will assess the ability of the nGoggle to detect visual field loss in patients with glaucoma, as well as to discriminate among the different stages of the disease, its repeatability and reliability for patient self-testing and patient satisfaction compared to standard automated perimetry (SAP), optical coherence tomography (OCT) metrics and Diopsys NOVA (Diopsys, Inc.). In addition, patients with other diseases affecting the visual system will also be tested in order to assess whether the nGoggle can differentiate glaucoma from them.