The disclosure relates to a guide configured to allow moving at least a portion of the beam delivery system, to adjust an orientation of at least the movable portion to different orientations of the patient's head measured around an axis of the eye to be treated. The system has an orientation analysis system for acquiring orientation-related data using one or more body portions of the patient. The ophthalmic laser system allows a user and/or the controller, using the orientation-related data, to move the movable portion of the beam delivery system so that during the laser treatment, the movable portion has an orientation around the axis of the eye and relative to the patient's head, which corresponds or substantially corresponds to a pre-determined target orientation; or which is within or substantially within a pre-determined target range.