I. The Apache. The Jicarillas. The Navaho. -- II. The Pima. The Papago. The Qahatika. The Mohave. The Yuma. The Maricopa. -- III. The Teton Sioux. The Yanktonai. The ...
According to the charity Prevent Blindness, almost 20 million Americans suffer from a kind of macular degeneration, which ultimately leads to lowering or loss of vision in the central field ...