RT Journal Article SR Electronic T1 Glaucoma in rural China (the Rural Epidemiology for Glaucoma in China (REG-China)): a national cross-sectional study JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 1458 OP 1466 DO 10.1136/bjo-2021-320754 VO 107 IS 10 A1 Liu, Yuanyuan A1 Yao, Baoqun A1 Chen, Xi A1 Yang, Xueli A1 Liu, Yong A1 Xie, Zhenggao A1 Chen, Xiaofeng A1 Yuan, Zhigang A1 Wang, Xingrong A1 Hu, Dan A1 Ma, Xiang A1 Gao, Weiqi A1 Wang, Ruifeng A1 Yang, Yuzhong A1 Chen, Song A1 Zhang, Jingkai A1 Song, Zuoqing A1 Wang, Junsu A1 Wang, Jing A1 Pei, Jinyun A1 Wang, Weijuan A1 Wang, Meiyan A1 Gao, Jun A1 Zhang, Hongwen A1 Tan, Lian A1 Du, Wei A1 Pan, Xuehui A1 Liu, Gang A1 Du, Xiujuan A1 Hou, Xu A1 Gao, Xin A1 Zhang, Zhen A1 Shen, Zhansheng A1 Wu, Changfu A1 Yan, Xiaochang A1 Bo, Shaoye A1 Sun, Xinghuai A1 Tang, Nai-jun A1 Zhang, Chun A1 Yan, Hua YR 2023 UL http://bjo.bmj.com/content/107/10/1458.abstract AB Objective This study aimed to investigate the prevalence of glaucoma with associated factors in the rural populations of 10 provinces in China.Design A population-based cross-sectional study.Methods All participants aged 6 years or older from 10 provinces completed visual acuity testing, slit-lamp examination, ophthalmoscopy and non-contact tonometry. Glaucoma suspects underwent fundus photography, Goldmann applanation tonometry, visual field testing and gonioscopy. Glaucoma was determined according to the International Society of Geographical and Epidemiological Ophthalmology classification scheme. Associations of demographics and medical factors with glaucoma were assessed using multiple logistic regression models.Results From June 2017 to October 2018, 48 398 of 52 041 participants were included in the final analyses. The age-standardised prevalence of glaucoma was 1.7% (95% CI 1.55% to 1.78%) among the participants older than 6 years, which was 2.1% (95% CI 1.93% to 2.23%) in participants aged over 40 years. The constituent ratios of glaucoma were: 44.4% primary angle-closure glaucoma (PACG), 34.7% primary open-angle glaucoma, 2.6% congenital glaucoma and 18.3% other types of glaucoma. Increasing age, smoking, cerebral stroke, type 2 diabetes, higher education (college or more) and higher personal income were significant risk factors for PACG. The unilateral and bilateral blindness rates in the entire study population were 4.692% and 1.068%, respectively. A family history of glaucoma was a significant risk factor for the prevalence of glaucoma and blindness in at least one eye.Conclusions Rural populations have a high prevalence of glaucoma, which should be included in chronic disease management programmes in China for long-term care.Data are available on reasonable request.