1. Department of Ophthalmology, The Second People's Hospital of Yunnan Province, Kunming, China
2. Department of Ophthalmology, Yunnan Eye Institute, Kunming, China
3. Department of Ophthalmology, Key Laboratory of Yunnan Province for the Prevention and Treatment of ophthalmology, Kunming, China
4. Yunnan Clinical Medical Center of Ophthalmology, Kunming, China
5. Clinical Medical Research Center for Ophthalmic Disease, Kunming, China
6. Department of Ophthalmology, the Second Affiliated Hospital of Kunming Medical University, Kunming, China
7. Pennsylvania State University, USA