Yu Jifeng, MD, Chief Physician, Department of Ophthalmology, Beijing Children's Hospital, Capital Medical University; National Center for Children's Health.

He serves as Vice Leader of the Visual Function and Ergonomics Evaluation Group, Ophthalmology Committee of China Association of Medical Equipment; Vice Chairman of the Ophthalmology & Optometry Special Committee, China National Medical Association; Vice President of Beijing Ophthalmology and Optometry Society; Standing Committee Member of the Ophthalmology & Optometry Special Committee, China Health Information and Healthcare Big Data Association; Young Standing Committee Member of the Visual Health Branch, China International Medical Exchange Promotion Association; and Committee Member of the Corneal Disease Group, Ophthalmology Branch of Beijing Medical Doctor Association.