Mixed reality systems and methods for indicating an extent of a field of view of an imaging device

A method comprising:

• emitting, by a computer-assisted medical system comprising a manipulator arm coupled to an active imaging device, illumination that illuminates an internal view of a body;
• controlling, by the computer-assisted medical system, the active imaging device to capture imagery of an internal view of a body during the illumination;
• identifying, by the computer-assisted medical system, an operating condition associated with an operation performed on the body while the active imaging device captures the imagery of the internal view of the body;
• determining, by the computer-assisted medical system and based on the identified operating condition, that a display device is to toggle a display of a shape overlay from a first state to a second state while an external view of the body as captured by an external image capture device positioned external to the body is being displayed by the display device, the shape overlay indicative of an extent of a field of view of the active imaging device relative to the body;
• and
• directing, by the computer-assisted medical system and based on the determining that the display device is to toggle the display of the shape overlay from the first state to the second state, the display device to toggle the display of the shape overlay from the first state to the second state, the directing the display device to toggle the display of the shape overlay from the first state to the second state comprising:
• directing, when the shape overlay is not being displayed when the operating condition is identified, the display device to begin displaying the shape overlay together with the external view of the body as captured by the external image capture device, and
• directing, when the shape overlay is being displayed when the operating condition is identified, the display device to cease displaying the shape overlay together with the external view of the body as captured by the external image capture device.