Objective: To estimate the prevalence of uncorrected refractive errors among people aged 50 years and above in Funing county, Jiangsu province. Methods: Randomly cluster sampling was used in selecting individuals aged ≥50 years in 82 clusters from Funing County Center for Disease Prevention and Control. Uncorrected refractive error was defined as an improvement of at least 2 lines in best corrected visual acuity compared with presenting visual acuity in the better eye. The mean±standard deviation was used to describe the continuous data, and the rate or composition ratio was used to represent the classified data. Univariate and multivariate logistic regression analyses were used to analyze the prevalence of uncorrected refractive errors in different ages, genders, educational levels, durations of diabetes and levels of glycosylated hemoglobin. Statistical significance was defined as P<0.05. Results: A total of 2 067 persons were enumerated, and 1910 (92.4%) participants were in the statistical analyses. The prevalence of uncorrected refractive error was 25.63%. The prevalence of uncorrected refractive error for myopia only, hyperopia only, astigmatism only, myopia with astigmatism and hyperopia with astigmatism was 72.55% (37/51), 46.77% (58/124), 17.81% (13/73), 63.95% (94/147) and 51.98% (100/194), respectively. The results showed that the older age, level of glycosylated hemoglobin, myopia and lens state were the independent influencing factors of uncorrected refractive error. The odds ratio (OR) for people aged 70 to<80 years and ≥80 years was 1.81 and 1.90, respectively, with statistical significance compared to people younger than 60 years. Compared with the level of glycosylated hemoglobin less than 5.6%, the OR with glycosylated hemoglobin from7.1% to 8.0% and more than 10% was 1.84 (P<0.05) and 1.82 (P<0.05), respectively. The OR of myopia, low myopia, moderate myopia and high myopia was 2.98 (P<0.01), 6.94 (P<0.01), 42.43 (P<0.01) and 77.85 (P<0.01), respectively. The OR of opacity of the eye lens was 7.60 (P<0.01). Conclusions: Uncorrected refractive error is one of the important causes of visual impairment in diabetic patients aged 50 and above in Funing county, Jiangsu province; the important influencing factors were age, glycosylated hemoglobin concentration, myopia and lens status. Relevant health departments should popularize the eye health for diabetic patients and conduct regular optometry and fundus examination. (Chin J Ophthalmol, 2021, 57: 757-765).
目的： 了解江苏省阜宁县50岁及以上糖尿病人群中未矫正屈光不正的患病率及其影响因素。 方法： 以人群为基础的横断面研究。采取整群随机抽样方法，于2019年3至5月抽取在阜宁县疾病预防控制中心慢病信息中心登记的50岁及以上糖尿病人群（82个抽样点），了解受检者一般情况、全身疾病及其治疗情况、体检指标、糖化血红蛋白浓度等。受检者进行视力和眼部检查，包括眼前节和眼底情况。未矫正的屈光不正定义为视力较好眼的日常生活视力<0.5且矫正后提高≥2行。分别采用独立t检验和χ²检验分析定量资料和分类资料的差异；采用单因素和多因素Logistic回归分析不同年龄、性别、文化程度、糖尿病患病时间、糖化血红蛋白等因素对未矫正屈光不正患病率的影响。 结果： 本次调查共检录2 067例糖尿病患者，实际接受调查1 965例，纳入统计分析1 910例，受检率为92.4%。345例存在未矫正的屈光不正，患病率为19.66%。单纯近视眼51例中未矫正屈光不正的患病率为72.55%（37/51），单纯远视眼124例中未矫正屈光不正的患病率为46.77%（58/124），单纯散光77例中未矫正屈光不正的患病率为17.81%（13/73），近视眼合并散光147例中未矫正屈光不正的患病率为63.95%（94/147）；远视眼合并散光194例，未矫正屈光不正的患病率为51.98%（100/194）。多因素Logistic回归分析发现，未矫正屈光不正的危险因素为高龄［与50~59岁相比，70~79岁、≥80岁人群未矫正屈光不正患病率风险增加（OR =1.81，1.90；均P<0.05）］、糖化血红蛋白浓度7.1%~8.0%、>10%（与<5.6%相比，OR=1.84，1.82；均P<0.05）、近视眼及其程度较重［与正视眼相比，近视眼、低度近视眼、重度近视眼、高度近视眼人群未矫正屈光不正患病率风险增加（OR=2.98，6.94，42.43，77.85；均P<0.01）、晶状体混浊人群未矫正屈光不正患病率风险增加（OR=7.60，P<0.01）。 结论： 江苏省阜宁县50岁及以上糖尿病人群中未矫正的屈光不正患病率较高，是该人群中视力损伤的重要原因之一，其重要影响因素为年龄、糖化血红蛋白浓度、近视眼患病情况及晶状体状态。相关卫生部门应对糖尿病患者进行眼部疾病的健康科普，定期进行验光和眼底检查。（中华眼科杂志，2021，57：757-765）.