Abstract: An apparatus is provided for permitting high power laser pulses to be controllably focused in the center of a biomicroscope field of observation by means of a mirror movable in three dimensions. The shutter mechanism, synchronized to the generation of each laser pulse, closes to protect the eyes of an observer against damage from the laser. The mirror is mounted on a shaft disposed on a housing for movement longituinally of its axis, rotationally about that axis, and pivotably about a point on the axis. The apparatus is portable so as to be easily transported to various locations in a medical facility.