- Correspondence to Dr Mina Chung, Flaum Eye Institute, University of Rochester, 601 Elmwood Ave Box 659, Rochester, NY 14642, USA; and Dr Hongxin Song, Beijing Institute of Ophthalmology, Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Key Laboratory of Ophthalmology and Visual Sciences, National Engineering Research Center for Ophthalmic Equipment, 17 Hou Gou Lane, Beijing 100005, China;
- Received March 21, 2017
- Revised July 1, 2017
- Accepted August 14, 2017
- First published October 26, 2017.
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