1. Department of Internal Medicine, Shanxi Eye Hospital, Taiyuan, Shanxi 030002, P.R. China
2. Department of Orbitopathy, Shanxi Eye Hospital, Taiyuan, Shanxi 030002, P.R. China
3. Department of Neurology, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
4. Department of Lacrimal Duct, Shanxi Eye Hospital, Taiyuan, Shanxi 030002, P.R. China