A microscope insert includes a camera, a display device, a beam splitter, and a processing unit. The camera is configured to receive a first portion of first light through a microscope from an object and generate a signal representing an image of the object. The display device is configured to generate a graphical representation of information relevant to the object and project second light representing the graphical representation. The beam splitter is configured to direct a second portion of the first light from the object and a first portion of the second light to a viewing device for simultaneously viewing the object and the information by a user. The processing unit is configured to track motions of the object based on the image of the object and control the display device to adjust the graphical representation according to the motions of the object.
