The subject application relates to methods of treatment of peripheral vascular disease as well as ischemic osteonecrosis, peritoneal ischemia, chronic ocular disease, macular degeneration, or diabetic retinopathy, comprising administering a therapeutically effective amount of a trans carotenoid. The method and surveillance tool installs a surveillance tool on a computer, and verifies whether there is a mass storage device connected to the computer. The status file is accessible over the Internet by computer so that a party can first determine the status of the device. When forming a second image using the second fluid over a first image formed using the first fluid, the second image’s nozzles are located towards the one side relative to the first image’s nozzles.