A terminal device for assisting operation of a plurality of eyeglass manufacturing apparatuses which are used for performing different work processes in processes of manufacturing eyeglasses, the terminal device comprising: communicating means for communicating with the plurality of eyeglass manufacturing apparatuses; setting means for setting, according to a process, a specific eyeglass manufacturing apparatus from the plurality of eyeglass manufacturing apparatuses as an eyeglass manufacturing apparatus of which the operation is assisted; and control means for controlling the communicating means to send an operating signal input in the terminal device to the specific eyeglass manufacturing apparatus set by the setting means or controlling the communicating means to receive an input signal input in the specific eyeglass manufacturing apparatus set by the setting means, a display; a storage for storing a plurality of work screens assisting an operation performed by an operator for each of the plurality of eyeglass manufacturing apparatuses; display control means for reading the plurality of work screens from the storage and displaying the plurality of work screens on a screen of the display; and selecting means for selecting the work screen of at least one eyeglass manufacturing apparatus from the plurality of work screens displayed on the display, wherein the setting means is adapted for setting the specific eyeglass manufacturing apparatus on the basis of the work screen of selected by selecting means from the plurality of work screens displayed on the display, and the different work processes include at least two of an optometric process, a lens measuring process, a lens processing preparing process, and a lens processing process. communicating means for communicating with the plurality of eyeglass manufacturing apparatuses; setting means for setting, according to a process, a specific eyeglass manufacturing apparatus from the plurality of eyeglass manufacturing apparatuses as an eyeglass manufacturing apparatus of which the operation is assisted; and control means for controlling the communicating means to send an operating signal input in the terminal device to the specific eyeglass manufacturing apparatus set by the setting means or controlling the communicating means to receive an input signal input in the specific eyeglass manufacturing apparatus set by the setting means, a display; a storage for storing a plurality of work screens assisting an operation performed by an operator for each of the plurality of eyeglass manufacturing apparatuses; display control means for reading the plurality of work screens from the storage and displaying the plurality of work screens on a screen of the display; and selecting means for selecting the work screen of at least one eyeglass manufacturing apparatus from the plurality of work screens displayed on the display, wherein the setting means is adapted for setting the specific eyeglass manufacturing apparatus on the basis of the work screen of selected by selecting means from the plurality of work screens displayed on the display, and the different work processes include at least two of an optometric process, a lens measuring process, a lens processing preparing process, and a lens processing process.