A mains electricity (AC-powered) device assembly intended to be connected between a slit lamp and an ophthalmic laser system to facilitate adjustment of laser treatment settings (e.g., laser intensity, spot size and number, pattern parameters, laser beam positioning) during eye laser treatment. It consists of a laser delivery compartment designed to be attached to the slit lamp, a laser power control unit, a touchscreen, and a remote control (e.g., touchpad, 3-D mouse) which duplicates the functions of the laser system remote control.