An example augmented reality (AR) system can include a frame, a lens attached to the frame, and a plurality of cameras attached to the frame. The cameras can be configured to record a real-time image. Optionally, the real-time image can include a portion of a subject's body and/or one or more surgical instruments. Additionally, the AR system can include a plurality of inertial measurement units, where a respective inertial measurement unit is attached to each respective camera. Optionally, the AR system can be configured to display image data (e.g., medical image data) registered and superimposed on the real-time image as seen by the user of the AR system.