Fig. 4
From: A review of existing and potential computer user interfaces for modern radiology
Potential use of manual and gaze input cascaded (MAGIC) pointing for diagnostic radiology. The radiologist is examining lung parenchyma. When he focuses on an anomaly, the eye tracking device automatically moves the pointer around the region of interest. A large amount of mouse movement is eliminated (dotted arrow), and is limited to fine pointing and zooming. This cascade follows the observer's examination, making the interaction more natural