Abstract: A virtual reality (VR) wearable assembly is described herein. The VR wearable assembly includes a wearable frame adapted to be worn over a patient's eyes and a pair of photosensor oculography (PSOG) assemblies mounted to the wearable frame such that each PSOG assembly is positioned adjacent a corresponding eye of the patient. Each PSOG assembly includes a display housing having an inner surface defining an interior cavity extending between a first end and second end, a micro-OLED display coupled to the display housing and positioned within the interior cavity adjacent the second end of the display housing, an eye tracking assembly coupled to the display housing and positioned adjacent the first end of the display housing, and a pancake lens mounted to the display housing and positioned within the interior cavity between the eye tracking assembly and the micro-OLED display.

Abstract: A virtual reality/augmented reality (VR/AR) wearable assembly is described herein. The VR/AR wearable assembly includes a wearable frame adapted to be worn over a patient's eyes, a pair of photosensor oculography (PSOG) assemblies mounted to the wearable frame with each PSOG assembly including a display and an eye tracking assembly, and a processor coupled to each PSOG assembly. The processor is configured to execute an algorithm to continuously calibrate the eye tracking assembly including the steps of rendering a sequence of images on a corresponding display and calibrating a corresponding eye tracking assembly by establishing a display coordinate system associated with the corresponding display, determining predicted fixation locations and estimated gaze position locations within the display coordinate system, and determining an offset gaze position value by mapping the estimated gaze position location to the predicted fixation location within the display coordinate system.

Abstract: An eye tracking system for use with a head-mounted display (HMD) unit is described. The eye tracking system includes a support frame mounted to the HMD unit, a light source mounted to the support frame and configured to illuminate an area of a patient eye, a plurality of photosensors mounted to the support frame and configured to receive reflected light from different portions of the illuminated patient eye, a temperature sensor mounted to the support frame and configured to measure a temperature of the photosensors, and a processor. The processor is programmed to execute an algorithm including a processing module that compensates photosensor measurement error due to variable operating temperature in the HMD unit, and an eye-tracking module that determines a gaze position of the patient eye using a mapping between intensities of photosensors and a gaze position estimated during a calibration procedure.