An instrument for visual examination of and operation on internal body organs includes a jacket defining an operating end and a longitudinally opposite control end, an outer tube disposed stationary inside the jacket, and an inner tube disposed for a rotation inside the outer tube. A first blade is rigidly connected to the outer tube at the operating end while a second blade is rigidly connected to the inner tube, adjacent the first blade. First fiber optic bundles with polished ends are disposed within a wall thickness of the jacket and diffusers are attached to the polished ends at the control end. Second fiber optic bundles are disposed within the wall thickness of the jacket, interspersed with the first fiber optic bundles. Lenses are attached to selective first fiber optic bundle at the control end. A mechanism is positioned at the control end and coupled to the first and second blades.
