Hands-free controller for surgical microscope

A system for controlling a surgical visualization system, the system comprising:

• a microscope camera associated with the surgical visualization system;
• a controller of the microscope camera, wherein the controller is separate from the microscope camera, wherein the controller comprises a joystick and a pressure detector, wherein the joystick comprises a tube to facilitate air flow, wherein the pressure detector is configured to detect pressure in the tube;
• a processor;
• and
• a memory storing instructions that, when executed by the processor, cause the processor to:
• receive a movement input based on a movement of the joystick along a Cartesian direction;
• detect, via the pressure detector, a negative pressure in the joystick caused by a sipping of air from the tube;
• cause a corresponding movement of the microscope camera along the Cartesian direction;
• receive, via the controller, a second movement input based on a second movement of the joystick along a second Cartesian direction;
• detect, via the pressure detector, a positive pressure in the joystick, based on a puffing of air into the tube;
• and
• cause a corresponding second movement of the microscope camera along the second Cartesian direction and a pivot of the microscope camera about a focal point at a destination of the corresponding second movement.