Microscope-mounted optical coherence tomography (MM-OCT) obtained volumetric rendering of surgical manipulation with the diamond-dusted Tano scraper in a cadaveric porcine eye. The surgical procedure was performed while viewing through the surgical microscope with concurrent acquisition of MM-OCT B-scans. Volumetric renderings allow three-dimensional visualization of the instrument and retina. Shadowing from the instruments obscures visualization of the directly underlying retina. (Reprinted with permission from Ehlers JP, Tao YK, Maldonado R, Izatt J, Toth CA. Intraoperative integration of a microscope mounted spectral domain optical coherence tomography system [published online ahead of print January 31, 2011]. Invest Ophthalmol Vis Sci. ©Association for Research in Vision & Ophthalmology).