ActiveLook projects a super-imposed, virtual image into your field of vision, floating just in front of you. It is projected slightly to the left in front of the right eye. It's about the size of a watch face held about 30 cm away. Your central vision remains completely open and clear.
ActiveLook is safe: it is designed to display values, symbols, and simple notifications. The information only appears when the gaze is shifted toward it; otherwise, it largely disappears.