A graphical user interface for use in an ocular surgical system, such asphacoemulsification and vitreo-retinal surgical systems. A display screenshows adisplay element that includes a representation of a parameter of pulsesgenerated by theocular surgical system relative to a position of the controller. A window isdisplayed onthe display screen and generated in response to touching the display screen ofthe ocularsurgical system. The window includes a display element having a value of aparameterof the system. A value of the parameter is changed by touching the displayscreen at theadjustment element. The window can also include a representation of theparameter ofthe pulses relative to the position of the controller and an adjustmentelement forchanging a value of the parameter represented in the display element. Therepresentationin the window can be linear or non-linear, indicating the function of theparameterrelative to a position of a controller, such as a foot pedal. A currentrepresentation of theparameter displayed in the window is changed to a different representation oftheparameter in response to touching the display screen at the window. The windowisclosed by touching the display screen at a pre-defined area of the window. Thewindowcan also be configured to fade away or close after a pre-determined amount oftime ofinactivity or in response to a user.