Wang Y, Ke M, Zheng T, Zhang J, Wang W H, Wu S Y
Ophthalmology of Zhongnan Hospital of Wuhan Univwersity, Wuhan 430071, China.
Zhonghua Yan Ke Za Zhi. 2017 Jul 11;53(7):522-527. doi: 10.3760/cma.j.issn.0412-4081.2017.07.009.
To investigate the characteristics and distribution of corneal astigmatism before surgery among age-related cataract patients in the Hubei area. Retrospective study. From January 1, 2012 to July 31, 2016, IOL Master measurements of all qualified cataract surgery candidates were retrospectively collected. Descriptive statistical analysis was used to assess the degree, distribution and type of corneal astigmatism. Kolmogorov-Smirnov () test was used to evaluate the normal distribution of variables. One-way analysis of variance and Kruskal-Wallis test were applied for the comparison of variance for normally and non-normally distributed quantitative data among different age groups. Spearman's rank test was used to assess the relationship between age and corneal astigmatism. The mean age of the 2 085 patients (3 586 eyes) involved was (73.1±9.43) years old, with more women (58.3%) than men. The mean value of corneal curvature was 44.33 D (95% 44.28-44.39), and the mean corneal astigmatism was 1.06 D (range, 0.05 D to 6.74 D). test indicated the distribution of corneal curvature was normal (0.18), while corneal astigmatism did not obey the normal distribution (0.01). Corneal astigmatism was between 0.25 D and 1.25 D in 67.7% of the eyes, >1.25 D in 29.7%, and<0.25 D in 4.2%. Corneal astigmatism degree increased with the age increase (0.01). There was no statistical difference in corneal astigmatism between women and men (0.075). However, women had steeper corneal curvatures than men with statistical difference (0.01). Corneal astigmatism with the rule was observed in 29.0% of the eyes, while astigmatism against the rule was found in 53.0%. And astigmatism against the rule increased with age. Corneal astigmatism mostly distributes between 0.25 D and 1.25 D in age-related cataract patients who lived in Hubei. Corneal astigmatism degree increased with age, and the dominant type was astigmatism against the rule. There was no difference in astigmatism between men and women patients aged 50 years and above, but in 70- to 79-year-old patients, women had a higher astigmatism degree than men. The corneal curvature of women was steeper than men in general and in each age group. .
调查湖北地区年龄相关性白内障患者术前角膜散光的特征及分布情况。回顾性研究。收集2012年1月1日至2016年7月31日期间所有符合条件的白内障手术候选者的IOL Master测量数据。采用描述性统计分析评估角膜散光的程度、分布及类型。运用柯尔莫哥洛夫-斯米尔诺夫（Kolmogorov-Smirnov）检验评估变量的正态分布情况。对于不同年龄组中呈正态分布和非正态分布的定量数据，分别采用单因素方差分析和Kruskal-Wallis检验进行方差比较。采用Spearman秩相关检验评估年龄与角膜散光之间的关系。纳入的2085例患者（3586只眼）平均年龄为（73.1±9.43）岁，女性患者（58.3%）多于男性。角膜曲率平均值为44.33 D（95%可信区间44.28 - 44.39），角膜散光平均值为1.06 D（范围0.05 D至6.74 D）。检验表明角膜曲率分布呈正态（0.18），而角膜散光不服从正态分布（0.01）。67.7%的眼角膜散光在0.25 D至1.25 D之间，29.7%的眼>1.25 D，4.2%的眼<0.25 D。角膜散光程度随年龄增加而升高（0.01）。男女之间角膜散光无统计学差异（0.075）。然而，女性角膜曲率比男性更陡峭，差异有统计学意义（0.01）。29.0%的眼观察到顺规角膜散光，53.0%的眼为逆规散光。且逆规散光随年龄增加。湖北地区年龄相关性白内障患者角膜散光大多分布在0.25 D至1.25 D之间。角膜散光程度随年龄增加，主要类型为逆规散光。50岁及以上男女患者散光无差异，但在70至79岁患者中，女性散光程度高于男性。总体及各年龄组中女性角膜曲率均比男性更陡峭。
