1. A visual prosthesis apparatus comprising: a video capture device for capturing a video image, wherein the video capture device has an adjustable field of view; a stimulation system adapted to contact a subject's visual neural tissue and configured to stimulate the subject's visual neural tissue based on a stimulation pattern, and a video processing unit associated with the video capture device, the video processing unit configured to: adjust the field of view of the video capture device to match a field of view of the subject's visual neural tissue subtended by the stimulation system; and once the video capture device is adjusted to match the field of view of the subject's visual neural tissue subtended by the stimulation system, convert a video image from the video capture device to the stimulation pattern.