Bledsoe's Disease
this strange affliction was bioengineered by the Empire, under the direction of Doctor Kaaldar, in the years following the Battle of Yavin. Specific strains of the disease could be unleashed, each causing unique reactions. In general, Bledsoe's causes the skin to burn, then begins discoloring the victim's eyes. The discoloration resolves itself into a starfield pattern, and the individual strains reveal individual patterns. Each of the patterns, however, is a star-map which showed the location of an Alliance base. Imperial forces were instructed to watch for outbreaks of the disease, then round up the victims and read the star-maps in their eyes. Thus, attacks could be made on Alliance bases without open communication of the next target. Luke Skywalker contracted Bledsoe's on Tatooine, and was taken into custody. He and Anduvil managed to escape from Doctor Kaaldar's laboratory and warn the Alliance about the use of Bledsoe's.