A method of remotely interfacing with a dialysis machine, comprising: providing a wearable, head-mounted interface device (401, 401', 402, 403) that enables remote interfacing with the dialysis machine by a user wearing the wearable, head-mounted interface device (401, 401', 402, 403), wherein the wearable, head-mounted interface device (401, 401', 402, 403) includes a command recognition device that recognizes and interprets non-contact commands in connection with operation of the wearable, head-mounted interface device (401, 401', 402, 403); wirelessly exchanging signals between the wearable, head-mounted interface device (401, 401', 402, 403) and the dialysis machine, wherein the signals correspond to a treatment performed using the dialysis machine; processing at least one of the signals at the wearable, head-mounted interface device (401, 401', 402, 403) to generate information (411, 411') used in connection with monitoring or controlling the dialysis machine; characterized by providing the wearable, head-mounted interface device (401, 401', 402, 403) including a first screen for displaying the information and a second screen which may include a symbol that indicates an alert, wherein the second screen provides a view through the wearable, head-mounted interface device (401, 401' 402, 403), wherein the view is unobstructed by a visual display during use of the wearable, head-mounted interface device (401, 401', 402, 403) and wherein the symbol is presented in a manner that does not obstruct the view; providing a display on the dialysis machine, wherein the display includes touch screen features that accept commands for controlling the dialysis machine; and by displaying the information (411, 411') on the first screen of the wearable, head-mounted interface device (401, 401', 402, 403), wherein a mechanism of control of a treatment screen displayed on the first screen of the wearable, head-mounted interface device (401, 401' 402, 403) deviates from control of a treatment screen displayed on the display using touch screen functionality. providing a wearable, head-mounted interface device (401, 401', 402, 403) that enables remote interfacing with the dialysis machine by a user wearing the wearable, head-mounted interface device (401, 401', 402, 403), wherein the wearable, head-mounted interface device (401, 401', 402, 403) includes a command recognition device that recognizes and interprets non-contact commands in connection with operation of the wearable, head-mounted interface device (401, 401', 402, 403); wirelessly exchanging signals between the wearable, head-mounted interface device (401, 401', 402, 403) and the dialysis machine, wherein the signals correspond to a treatment performed using the dialysis machine; processing at least one of the signals at the wearable, head-mounted interface device (401, 401', 402, 403) to generate information (411, 411') used in connection with monitoring or controlling the dialysis machine; characterized by providing the wearable, head-mounted interface device (401, 401', 402, 403) including a first screen for displaying the information and a second screen which may include a symbol that indicates an alert, wherein the second screen provides a view through the wearable, head-mounted interface device (401, 401' 402, 403), wherein the view is unobstructed by a visual display during use of the wearable, head-mounted interface device (401, 401', 402, 403) and wherein the symbol is presented in a manner that does not obstruct the view; providing a display on the dialysis machine, wherein the display includes touch screen features that accept commands for controlling the dialysis machine; and by displaying the information (411, 411') on the first screen of the wearable, head-mounted interface device (401, 401', 402, 403), wherein a mechanism of control of a treatment screen displayed on the first screen of the wearable, head-mounted interface device (401, 401' 402, 403) deviates from control of a treatment screen displayed on the display using touch screen functionality.