Abstract: A wearable foot controller for a surgical instrument may include a body configured to be worn on a foot and including a heel portion and a ball portion on an opposite end of the body from the heel portion, a heel pressure sensor, a ball pressure sensor, a heel movement sensor, a ball movement sensor, and a processor. The processor may be configured to detect activation of the heel pressure sensor and generate control data for the surgical instrument based upon the ball movement sensor when the heel pressure sensor is activated using the processor, and detect activation of the ball pressure sensor and generate control data for the surgical instrument based upon the heel movement sensor when the ball pressure sensor is activated using the processor. The processor may also be configured to communicate the control data from the processor to the surgical instrument via a communications link.

Abstract: Eyeglasses may include a frame body and at least one lens carried by the frame body, and at least one display carried on at least one exterior surface of the frame body and configured to display a changeable image thereon. The at least one display may be conformal to the at least one exterior surface. The eyeglasses may further include a communications interface carried by the frame body, and a controller carried by the frame body and coupled to the at least one display and the communications interface. The controller may be configured to receive display data via the communications interface, and selectively change the image on the at least one display based upon the received display data to thereby change an external visual appearance of the frame body.

Abstract: Eyeglasses may include a frame body and at least one lens carried by the frame body, and at least one display carried on at least one exterior surface of the frame body and configured to display a changeable image thereon. The at least one display may be conformal to the at least one exterior surface. The eyeglasses may further include a communications interface carried by the frame body, and a controller carried by the frame body and coupled to the at least one display and the communications interface. The controller may be configured to receive display data via the communications interface, and selectively change the image on the at least one display based upon the received display data to thereby change an external visual appearance of the frame body.

Abstract: Eyeglasses may include a frame body and at least one lens carried by the frame body, and at least one display carried on at least one exterior surface of the frame body and configured to display a changeable image thereon. The at least one display may be conformal to the at least one exterior surface. The eyeglasses may further include a communications interface carried by the frame body, and a controller carried by the frame body and coupled to the at least one display and the communications interface. The controller may be configured to receive display data via the communications interface, and selectively change the image on the at least one display based upon the received display data to thereby change an external visual appearance of the frame body.

Abstract: Eyeglasses may include a frame body and at least one lens carried by the frame body, and at least one display carried on at least one exterior surface of the frame body and configured to display a changeable image thereon. The at least one display may be conformal to the at least one exterior surface. The eyeglasses may further include a communications interface carried by the frame body, and a controller carried by the frame body and coupled to the at least one display and the communications interface. The controller may be configured to receive display data via the communications interface, and selectively change the image on the at least one display based upon the received display data to thereby change an external visual appearance of the frame body.