Devices, systems, and methods measure, diagnose, andor treat one or both eyes of a patient. Each client has a boot operating system. The second DC voltage is coupled to an ignition gap, and causes the ignition gap to ionize and form a spark. A monitor may be divided into multiple screens to generate a plurality of the displays. The adaptor, drape, and system allow for draping portions of a telerobotic surgical system to maintain a sterile barrier between the sterile surgical field and the non-sterile robotic system while also providing an interface for transferring mechanical and electrical energy and signals between a robotic arm and a surgical instrument in the sterile field. One method includes detecting whether a second conveyor controller is connected to the first conveyor controller and, in response to detecting that there is a second conveyor controller connected to the first conveyor controller, identifying whether the second conveyor controller is connected to a predetermined network interface of the first conveyor controller.