The present invention provides a glass type terminal comprising: a frame formed to be fixable to a user's head; a display unit mounted on the frame and outputting visual information; an optical unit formed from at least one lens and forming an image from the visual information; a user input unit for sensing a control command for changing a operating mode; and a control unit for controlling the display unit such that the visual information changes on the basis of the change of the operating mode, and controlling the optical unit such that a focal length of the image changes according to the changed operating mode.