1. Department of Ophthalmology, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
2. Department of Endocrinology, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
3. Department of Neurology, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, P.R. China
4. Department of Ophthalmology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China