Remote image screen multiple

3kg. Far like light screen is an intelligent product to protect eyesight, weighing 3 kg. The telephoto screen was jointly developed by Beijing Tongren Hospital affiliated to Capital Medical University and Ruishi Technology, and carried out four clinical trials in National Ophthalmology Diagnosis and Treatment Engineering Technology Research Center, Ophthalmology Diagnosis and Treatment Equipment and Materials Engineering Research Center of Ministry of Education, Beijing Ophthalmology Research Institute, Beijing Tongren Hospital affiliated to Capital Medical University, Beijing Chaoyang Maternal and Child Health Hospital and Beijing Meiermu Eye Hospital from February to October, 2020.