1. A visual prosthesis apparatus comprising: a camera for capturing a video image; a video processing unit, within a housing, including a connector on an outside surface of the housing, suitable for a user to detachably connect, disconnect and reconnect, the camera to the video processing unit the connector suitable to transmit the video image to the video processing unit; the video processing unit configured to convert the video image to stimulation patterns, to wirelessly transmit the stimulation patterns to a retinal stimulation system, wirelessly receive operational status signals from the retinal stimulation system, and comprising one or more indicator lights providing multiple indications to provide visual indication of operating status of the apparatus including safety and operational status signals received wirelessly from the retinal stimulation system, including an indication when video from the detachably connected camera is not received by the video processing system; and the retinal stimulation system configured to wirelessly receive the stimulation patterns and wirelessly transmit error signals to the video processing unit and to stimulate neural tissue in a subject's eye based on the stimulation patterns, and the one or more indicator lights being configured to be of different colors or emitting light with different blinking patterns, wherein said multiple indications are based on different combinations of colors or different blinking patterns.