Abstract: A method of treating target tissue of an embodiment comprises: selecting a treatment pattern of spots; generating an aiming beam of aiming light; translating the aiming beam to form an aiming pattern of the aiming light on the target tissue that indicates the extent of the treatment pattern; generating a treatment beam of treatment light; and translating the treatment beam to form the selected treatment pattern of spots of the treatment light on the target tissue.

Abstract: A method for delivering electromagnetic radiation onto tissue to be treated with the radiation includes delivering the radiation onto the tissue in a treatment-spot having a polygonal shape such as a rectangle or a hexagon. The polygonal shape is selected such that a region of the tissue to be treated can be completely covered by a plurality of such shapes essentially without overlapping the shapes. The radiation to be delivered is passed through a lightguide having a cross-section of the polygonal shape. Radiation exiting the lightguide is projected onto the tissue via a plurality of optical elements to provide the treatment-spot.