Assessment of early diabetic retinopathy severity using ultra-widefield Clarus versus conventional five-field and ultra-widefield Optos fundus imaging. - Xiao, Yuanyuan; Dan, Handong; Du, Xiaofeng; Michaelide, Michel; Nie, Xiaodong; Wang, Wanxiao; Zheng, Miao; Wang, Dongdong; Huang, Zixu; Song, Zongming (Scientific Reports, 2023)