A medical stereoscopic observation apparatus having circuitry that acquires a status signal according to a status of image processing from each image processing circuit of a plurality of image processing circuits that perform the image processing on input image data through a selected image processing unit among a plurality of image processing units in the respective image processing circuit and generates output image data to be output as a right eye image or a left eye image, and causes a second image processing circuit different from a first image processing circuit to switch the selected image processing unit to match the selected image processing unit of the first image processing circuit, according to the status signal acquired from the first image processing circuit among the image processing circuits of the plurality of image processing circuits.
