Purpose To determine the six-year incidence, risk factors, and causes of visual impairment in a Chinese population. Methods This was a population-based study of eye disease in Chinese adults in a rural district of Handan in China. 6,830 individuals were invited to participate in 2006 and 5,394 returned for follow-up in 2012. All participants underwent standardized eye examinations. Visual impairment was defined according to WHO criteria. The incidence of visual impairment was age- and gender-standardized to the 2010 China Census. Multivariable logistic regression analysis was used to determine risk factors for visual impairment. Results The leading causes of visual impairment were cataract and refractive error. Based onpresenting visual acuity(PVA), the six-year incidence rates of low vision and blindness were 5.2% and 0.5%, respectively. Incidence of low vision was associated with older age (p< .001), less education (p< .001), diabetes (p< .05), and lower BMI (p< .001). The incidence of blindness was associated with diabetes (p< .05). Based onbest-corrected visual acuity(BCVA), the six-year incidence rates of low vision and blindness were 0.8% and 0.1%, respectively. Incidence of low vision was associated with older age (p< .001) and lower BMI (p< .05). None of these factors were associated with the incidence of blindness. Conclusion In Handan, the incidence of visual impairment was high and associated with older age, less education, diabetes, and lower BMI. The majority of cases were due to unoperated cataract and uncorrected refractive error, reflecting the need for improved eye care in this region.
基金：
Ministry of Science and Technology of ChinaMinistry of Science and Technology, China [2007CB512201]; Key Technologies RD ProgramNational Key Technology R&D Program
第一作者机构：[1]Capital Med Univ, Beijing Tongren Hosp, Beijing Tongren Eye Ctr, Beijing Inst Ophthalmol,Beijing Key Lab Ophthalmo, Beijing, Peoples R China
通讯作者：
推荐引用方式(GB/T 7714)：
Hu Ailian,Gu Sophie Z.,Friedman David S.,et al.Six-Year Incidence and Causes of Low Vision and Blindness in a Rural Chinese Adult Population: The Handan Eye Study[J].OPHTHALMIC EPIDEMIOLOGY.2021,28(2):160-168.doi:10.1080/09286586.2020.1795886.
APA：
Hu, Ailian,Gu, Sophie Z.,Friedman, David S.,Cao, Kai&Wang, Ningli.(2021).Six-Year Incidence and Causes of Low Vision and Blindness in a Rural Chinese Adult Population: The Handan Eye Study.OPHTHALMIC EPIDEMIOLOGY,28,(2)
MLA：
Hu, Ailian,et al."Six-Year Incidence and Causes of Low Vision and Blindness in a Rural Chinese Adult Population: The Handan Eye Study".OPHTHALMIC EPIDEMIOLOGY 28..2(2021):160-168
