Patient uses rangefinder to determine his distance from the wall as he walks towards it. Simulation of what the patient is seeing overlaid on what the camera is seeing. Patient describes what he sees as he scans the room. Patient finds hat taped to wall and retrieves it. Patient finds dummy and places hat on his head.
Patient removes hat from the wall and places it on the dummy.
The patient determines the orientation of a tumbling 'E' on the wall. Patient scans tumbling 'E' on computer screen using a joystick. Notice the camera mounted on the patient's hat.