Distribution of posterior corneal astigmatism according to axis orientation of anterior corneal astigmatism.
Distribution of posterior corneal astigmatism according to axis orientation of anterior corneal astigmatism.
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DOI：
10.1371/journal.pone.0117194
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Kamiya K
中科院分区：
文献类型：
--
作者：
Miyake T;Shimizu K;Kamiya K
目的探讨规则性(WTR)和逆规性(ATR)角膜前部散光的分布情况。我们对608名健康受试者(275名男性，333名女性；平均年龄±标准差，55.3±20.2岁)的6.8只眼进行了回顾性检查。将受试者分为WTR组和ATR组，用旋转式Scheimpflg系统(Pentacam HR，Oculus)测量角膜前、后散光的大小和轴向。角膜前部散光1.14±0.76 D，后部散光0.37±0.19 D。我们发现角膜前、后散光程度之间存在显著的相关性(皮尔逊相关系数r=0.4739，P<；0.001)。在WTR前散光组中，有402只眼(96.6%)的角膜后表面有ATR散光。在ATR前部散光组中，82只眼(73.9%)有ATR后部散光。其中，ATR前部散光大于或等于1D者28眼(59.6%)，ATR后部散光9眼(42.9%)。WTR前部散光约占68%，ATR后部散光约91%。角膜后散光的大小和轴向不是恒定的，特别是在高ATR前部散光的眼，这在Toric IOL植入后的患者中是常见的。
To investigate the distribution of posterior corneal astigmatism in eyes with with-the-rule (WTR) and against-the-rule (ATR) anterior corneal astigmatism. We retrospectively examined six hundred eight eyes of 608 healthy subjects (275 men and 333 women; mean age ± standard deviation, 55.3 ± 20.2 years). The magnitude and axis orientation of anterior and posterior corneal astigmatism were determined with a rotating Scheimpflug system (Pentacam HR, Oculus) when we divided the subjects into WTR and ATR anterior corneal astigmatism groups. The mean magnitudes of anterior and posterior corneal astigmatism were 1.14 ± 0.76 diopters (D), and 0.37 ± 0.19 D, respectively. We found a significant correlation between the magnitudes of anterior and posterior corneal astigmatism (Pearson correlation coefficient r = 0.4739, P<0.001). In the WTR anterior astigmatism group, we found ATR astigmatism of the posterior corneal surface in 402 eyes (96.6%). In the ATR anterior astigmatism group, we found ATR posterior corneal astigmatism in 82 eyes (73.9%). Especially in eyes with ATR anterior corneal astigmatism of 1 D or more and 1.5 D or more, ATR posterior corneal astigmatism was found in 28 eyes (59.6%) and 9 eyes (42.9%), respectively. WTR anterior astigmatism and ATR posterior astigmatism were found in approximately 68% and 91% of eyes, respectively. The magnitude and the axis orientation of posterior corneal astigmatism were not constant, especially in eyes having high ATR anterior corneal astigmatism, as is often the case in patients who have undergone toric IOL implantation.
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DOI：
10.1034/j.1600-0420.2002.800406.x
发表时间：
2002-08-01
期刊：
ACTA OPHTHALMOLOGICA SCANDINAVICA
影响因子：
--
作者：
Dubbelman, M;Weeber, HA;Völker-Dieben, HJ
通讯作者：
Völker-Dieben, HJ
影响因子：
2.8
作者：
Prisant, O;Thanh, HX;Azar, DT
通讯作者：
Azar, DT
影响因子：
4.4
作者：
Wang, Li;Mahmoud, Ashraf M.;Roberts, Cynthia J.
通讯作者：
Roberts, Cynthia J.
影响因子：
2.8
作者：
Wang, Li;Shirayama, Mariko;Koch, Douglas D.
通讯作者：
Koch, Douglas D.
影响因子：
2.8
作者：
Koch, Douglas D.;Jenkins, Richard B.;Wang, Li
通讯作者：
Wang, Li