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.
Sometimes, a head injury, eye trauma or another condition or disease can cause ptosis. Generally, this occurs when there is either damage to the âlevatorâ muscles that hold the eyelids up, or damage to the nerves which control these muscles.
Page last modified: June 14, 2009 Disorders where one eye is higher than the other often cause vertical double vision (diplopia). Common causes include: Disorders where one eye is higher than the other often cause vertical double vision (diplopia). Common causes include: 1  Ocular muscle weakness (called hyper deviation).2  Central ocular control disturbances (here it is called skew).3  Otolithic imbalance (also called skew).hen it occurs even when both eyes are viewing, it is called a hyper deviation. Hyperphoria and hyperdeviation generally refer to the situation where the cause is known. For example, ocular palsies such as 4th nerve palsy can cause a hyper deviation or phoria.