In a simulation system in which a terminal device 1 employed in a spectacle shop and a display device 2 for visually recognizing by a prospective spectacle lens wearer, are connected to a server device 3 so as to capable of communication: the server device 3 includes an image generation unit 35 that achieves a state in which a simulation image reflecting lens visual performance of a spectacle lens can be output for each of plural partial visual field areas, and an information storage unit 36 that stores explanatory information regarding characteristics of the lens visual performance for each of the plural partial visual field areas； the display device 2 includes a display screen unit 22 that selectively displays the simulation images in the partial visual field areas； and the terminal device 1 includes an information output unit 12a that outputs the explanatory information corresponding to the partial visual field area being displayed on the display screen unit 22.
