An optical light scanning probe, comprising: a handle, shaped for grasping by a user; a cannula, protruding from a distal portion of the handle with an outer diameter smaller than 1, 81 mm (20 gauge); the cannula is having a cannula-axis; a fixed beam forming unit disposed at a distal end portion of the cannula, the beam forming unit comprising at least one of a GRIN lens, a lens, a lens system and a focusing element, and the beam forming unit is having a beam forming unit-axis; and wherein a probe-axis is one of the cannula-axis and the beam forming unit-axis; an optical fiber comprising a distal fiber portion off the probe-axis, configured to receive a light from a light source at a proximal fiber portion, and to emit the received light at the distal fiber portion; a fiber actuator housed at least partially in the handle, comprising: a rotation tube rotatably positioned in the cannula, wherein the rotation tube comprises an eccentric hole off the cannula-axis, a motor, configured to rotate a hollow torque cable that has a distal portion inside the cannula; wherein the hollow torque cable is configured to rotate the rotation tube when rotated by the motor, and to house a portion of the optical fiber that extends into the cannula to guide the optical fiber to the eccentric hole; wherein the fiber actuator is configured to circularly move the distal fiber-portion by rotating the hollow torque cable that rotates the rotation tube with the eccentric hole which is coupled to the distal fiber-portion such that a light beam is output as deflected beam through the beam forming unit 140 along a scanning curve. a handle, shaped for grasping by a user; a cannula, protruding from a distal portion of the handle with an outer diameter smaller than 1, 81 mm (20 gauge); the cannula is having a cannula-axis; a fixed beam forming unit disposed at a distal end portion of the cannula, the beam forming unit comprising at least one of a GRIN lens, a lens, a lens system and a focusing element, and the beam forming unit is having a beam forming unit-axis; and wherein a probe-axis is one of the cannula-axis and the beam forming unit-axis; an optical fiber comprising a distal fiber portion off the probe-axis, configured to receive a light from a light source at a proximal fiber portion, and to emit the received light at the distal fiber portion; a fiber actuator housed at least partially in the handle, comprising: a rotation tube rotatably positioned in the cannula, wherein the rotation tube comprises an eccentric hole off the cannula-axis, a motor, configured to rotate a hollow torque cable that has a distal portion inside the cannula; wherein the hollow torque cable is configured to rotate the rotation tube when rotated by the motor, and to house a portion of the optical fiber that extends into the cannula to guide the optical fiber to the eccentric hole; a rotation tube rotatably positioned in the cannula, wherein the rotation tube comprises an eccentric hole off the cannula-axis, a motor, configured to rotate a hollow torque cable that has a distal portion inside the cannula; wherein the hollow torque cable is configured to rotate the rotation tube when rotated by the motor, and to house a portion of the optical fiber that extends into the cannula to guide the optical fiber to the eccentric hole; wherein the fiber actuator is configured to circularly move the distal fiber-portion by rotating the hollow torque cable that rotates the rotation tube with the eccentric hole which is coupled to the distal fiber-portion such that a light beam is output as deflected beam through the beam forming unit 140 along a scanning curve.