1. A mixed reality display system with gaze determination comprising: a see-through, near-eye, mixed reality display device; at least one image generation unit for generating at least one virtual image for display by the see-through, near-eye, mixed reality display device; a respective arrangement of gaze detection elements positioned on the display device for forming a spatial relationship between the gaze detection elements and each eye, the gaze detection elements including a set of illuminators for generating glints on the respective eye each illuminator positioned on the see-through display device at a respective predetermined position and generating illumination about a predetermined wavelength, and at least one respective sensor for capturing light reflected from the respective eye and generating data representing the captured reflected light, the at least one respective sensor positioned at a predetermined position in relation to predetermined positions of the set of illuminators on the see-through display device; a memory for storing software and the data; and one or more processors communicatively coupled to the at least one respective sensor to receive the data representing the captured reflected light and having access to the memory for storing the data, the one or more processors determining a gaze vector for each respective eye based on the data representing the captured reflected light and a point of gaze based on the gaze vectors in a three-dimensional (3D) user field of view wherein data representing the captured reflected light includes glint intensity data and wherein for each eye, the one or more processors determining the gaze vector comprises: in a time period, using a first technique that comprises determining a center of a cornea and a center of the pupil based on image data of the respective eye a first number of times, and during the same time period, using a second different technique based on the glint intensity data independent of the image data of the respective eye for a second number of times.