there is disclosed herein a step lighting fixture including an extrusion having a single channel for receiving a light directing member which directs light from a single lighting string both upwardly and downwardly with respect to a stair edge or stair nose . this enables the edge of a stair and the riser thereof or next lower step to be readily seen by one either descending or ascending the stair or stairway . the light directing member can include a pair of reflectors for reflecting light upwardly and downwardly . alternatively , it can include a single reflector for reflecting light upwardly , and another section , either clear , segmented or both clear and segmented , for directing light downwardly .