Abstract: Disclosed is a surgical apparatus which provides multidimensional views of the internal area of a biological specimen. The apparatus includes an endoscope connected to an operating microscope. The endoscope can be a sleeve formed by a series of collar elements or a rigid rod. The endoscope contains a guide or lens means for transmitting an optical image and an illuminating means for the transmission of light. A moveable prism is positioned on the end of each of the guide or lens means and serves to enlarge the apparatuses field of view as well as enhance stereoscopic imaging.