Liu Hui, Xu Zequan, Qian Zhuyun, Liang Jianheng, Wei Kunqiao, Zu Lipiya, Chen Xu
Aier School of Ophthalmology, Central South University, Changsha, Hunan Province, China.
Department of Ophthalmology, Frist Medical Center, Chinese People's Liberation Army General Hospital (PLAGH), Fuxing Road 28, Beijing 100039, China.
J Ophthalmol. 2020 Dec 15;2020:2863698. doi: 10.1155/2020/2863698. eCollection 2020.
To compare ocular biometric parameters between urban and rural cataract patients in Shanghai, China.
A study of ocular biometry records from urban and rural hospitals was performed for cataract patients at least 50 years of age. The ocular biometrical parameters, which were measured with partial coherence laser interferometry (IOL Master, Zeiss), were axial length (AL), anterior chamber depth (ACD), radius of corneal curvature (, including steep/flat/average ), astigmatism, and axis. Only the right eye record of each patient was analysed.
Ocular biometric data included 2839 urban patients (73.15 ± 9.54 years) and 2646 rural patients (73.64 ± 7.32 years). Mean AL, ACD, and were 24.35 ± 2.34 mm, 3.14 ± 0.58 mm, and 44.38 ± 1.52 D, respectively, in urban patients and 23.58 ± 1.70 mm, 3.08 ± 0.57 mm, and 44.53 ± 1.50 D, respectively, in rural patients. The urban subjects had significantly longer axial lengths (in both univariate and multivariate linear regression analyses) and deeper ACDs (in univariate analysis) than rural subjects ( < 0.01). There was no significant difference in steep , flat , and average between the two groups. With-the-rule (WTR) corneal astigmatism was found in 1787 eyes (32.58%), against-the-rule (ATR) corneal astigmatism was found in 2727 eyes (49.72%), and oblique corneal astigmatism was found in 971 eyes (17.70%).
We report biometry and astigmatism data in a large cohort of urban and rural adult subjects for the first time. In our study, a short AL, shallow ACD, and axis turned in an ATR direction had higher prevalence rates in the rural subjects. This profile of ocular biometric data and corneal astigmatism will be helpful in planning for intraocular lens (IOL) power calculations and astigmatism correction in subjects in different locations.
比较中国上海城乡白内障患者的眼部生物测量参数。
对来自城乡医院的至少50岁白内障患者的眼部生物测量记录进行研究。使用部分相干激光干涉仪（IOL Master，蔡司）测量的眼部生物测量参数包括眼轴长度（AL）、前房深度（ACD）、角膜曲率半径（包括陡峭/平坦/平均）、散光和轴位。仅分析每位患者的右眼记录。
眼部生物测量数据包括2839名城市患者（73.15±9.54岁）和2646名农村患者（73.64±7.32岁）。城市患者的平均AL、ACD和分别为24.35±2.34mm、3.14±0.58mm和44.38±1.52D，农村患者分别为23.58±1.70mm、3.08±0.57mm和44.53±1.50D。城市受试者的眼轴长度明显更长（单变量和多变量线性回归分析均如此），前房深度也更深（单变量分析），与农村受试者相比差异有统计学意义（P<0.01）。两组之间陡峭、平坦和平均角膜曲率半径无显著差异。顺规角膜散光见于1787只眼（32.58%），逆规角膜散光见于2727只眼（49.72%），斜向角膜散光见于971只眼（17.70%）。
我们首次报告了大量城乡成年受试者的生物测量和散光数据。在我们的研究中，农村受试者眼轴短、前房浅以及轴位呈逆规方向的患病率较高。这种眼部生物测量数据和角膜散光特征将有助于不同地区受试者人工晶状体（IOL）屈光度计算和散光矫正的规划。
