Wallace, Idaho. Wallace is a historic city in the Panhandle region of the U.S. state of Idaho and the county seat of Shoshone County in the Silver Valley mining district. Wallace sits alongside the South Fork of the Coeur d'Alene River (and Interstate 90) and the town's population was 784 at the 2010 census.
Ptosis can be caused by a number of factors that affect the muscles, nerves, or skin of the eyelids. The muscles that allow your eyelids to move up and downâcalled the levator musclesâcan become weakened from age or injury.
While involutional ptosis is the most common cause of ptosis in older populations, there are many etiologies that affect all age groups. Before characterizing the different etiologies of ptosis it is important to have baseline knowledge of the anatomy of the eyelid and how to perform a proper eyelid exam.