A medical-information processing system comprising a plurality of devices, wherein
- a device among the plurality of devices that is to display a primary medical image operates as a master device, and another device that is to display an image other than the primary medical device operates as a slave device,
- the master device
- controls a left-eye image and a right-eye image forming a medical image so as to be displayed on a master-side display in a time-division manner, and
- transmits a synchronization signal that corresponds to timing in which the left-eye image and the right-eye image are displayed, and
- the slave device acquires the synchronization signal and controls a left-eye image and a right-eye image forming a medical image so as to be displayed in a time-division manner on a slave-side display in accordance with the synchronization signal.