1Department of Geriatrics, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing 100091, People’s Republic of China; 2Department of Ophthalmology, Dongfang Hospital, Beijing University of Chinese Medicine, Beijing 100078, People’s Republic of China; 3Department of Pharmacognosy, Institute of Pharmaceutical Sciences, University of Graz, Graz, Austria; 4Department of Polymer Chemistry, Zernike Institute for Advanced Materials, Groningen 9747 AG, The Netherlands