1. A robotic surgical system comprising: an endoscope held by and positioned by a robotic manipulator arm of the robotic surgical system; a visible imaging system coupled to the endoscope, wherein the visible imaging system captures a visible image of tissue; an alternate imaging system coupled to the endoscope, wherein the alternate imaging system captures a fluorescence image of at least a portion of the tissue; and a stereoscopic video display system coupled to the visible imaging system and to the alternate imaging system, wherein the stereoscopic video display system outputs a real-time stereoscopic image comprising a three-dimensional blend of another fluorescence image associated with the captured fluorescence image, and the visible image.