RT Journal Article SR Electronic T1 Application of artificial intelligence system for screening multiple fundus diseases in Chinese primary healthcare settings: a real-world, multicentre and cross-sectional study of 4795 cases JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP bjo-2022-322940 DO 10.1136/bjo-2022-322940 A1 Chufeng Gu A1 Yujie Wang A1 Yan Jiang A1 Feiping Xu A1 Shasha Wang A1 Rui Liu A1 Wen Yuan A1 Nurbiyimu Abudureyimu A1 Ying Wang A1 Yulan Lu A1 Xiaolong Li A1 Tao Wu A1 Li Dong A1 Yuzhong Chen A1 Bin Wang A1 Yuncheng Zhang A1 Wen Bin Wei A1 Qinghua Qiu A1 Zhi Zheng A1 Deng Liu A1 Jili Chen YR 2023 UL http://bjo.bmj.com/content/early/2023/03/05/bjo-2022-322940.abstract AB Background/aims This study evaluates the performance of the Airdoc retinal artificial intelligence system (ARAS) for detecting multiple fundus diseases in real-world scenarios in primary healthcare settings and investigates the fundus disease spectrum based on ARAS.Methods This real-world, multicentre, cross-sectional study was conducted in Shanghai and Xinjiang, China. Six primary healthcare settings were included in this study. Colour fundus photographs were taken and graded by ARAS and retinal specialists. The performance of ARAS is described by its accuracy, sensitivity, specificity and positive and negative predictive values. The spectrum of fundus diseases in primary healthcare settings has also been investigated.Results A total of 4795 participants were included. The median age was 57.0 (IQR 39.0–66.0) years, and 3175 (66.2%) participants were female. The accuracy, specificity and negative predictive value of ARAS for detecting normal fundus and 14 retinal abnormalities were high, whereas the sensitivity and positive predictive value varied in detecting different abnormalities. The proportion of retinal drusen, pathological myopia and glaucomatous optic neuropathy was significantly higher in Shanghai than in Xinjiang. Moreover, the percentages of referable diabetic retinopathy, retinal vein occlusion and macular oedema in middle-aged and elderly people in Xinjiang were significantly higher than in Shanghai.Conclusion This study demonstrated the dependability of ARAS for detecting multiple retinal diseases in primary healthcare settings. Implementing the AI-assisted fundus disease screening system in primary healthcare settings might be beneficial in reducing regional disparities in medical resources. However, the ARAS algorithm must be improved to achieve better performance.Trial registration number NCT04592068.Data are available on reasonable request.