1. Eye Institute of Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
2. Department of Ophthalmology, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, China
3. The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan Shandong, China
4. Department of Ophthalmology, Medical Faculty Mannheim of the Ruprecht-Karls-University Heidelberg, Germany