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Quantitative Measurements of the Decentration Distance of Four Kinds of Intraocular Lens

机译：四种人工晶状体的偏心距的定量测量

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Purpose: To investigate a quantitative method to measure decentration distance(DD) and analyze the DD of four kinds of intraocular lenses (IOLs). Methods: The pseudophakic eye photos were taken under the slit lamp after the IOLs were implanted a year or longer. Then the images were inputted into a computer and the Photoshop software was applied to analyze the DD. Four kinds of IOLs were analyzed, including AcrySof MA60BM (11 eyes), Allergan SA40N (11 eyes), AcrySof SA60AT/SA30AL (5 eyes), Corneal Quattro (4 eyes). Results: The mean value of DD was (0.2643+-0.1574)mm in the AcrySof MA60BM group,(0.3536+-0.1719)mm in the Array SA40N group, (0.3099+-0.1529)mm in the SA60AT/SA30AL group, and (0.3261+-0.1877)mm in the Quattro group. The difference of the DD values among these 4 kinds of IOLs had no statistic significance (F=0.506, P=0.681) and the values were not equal to zero (t=10.508, P < 0.001). Conclusion: The Photoshop method is a simple and efficient way for DD analysis. The modern foldable posterior-chamber-IOLs have good centration performances when implanted into the capsular bags.
机译：目的：探讨一种定量方法来测量偏心距离（DD）并分析四种人工晶状体（IOL）的DD。方法：人工晶体植入一年以上后，在裂隙灯下拍摄假晶状体眼照片。然后将图像输入计算机，然后使用Photoshop软件分析DD。分析了四种IOL，包括AcrySof MA60BM（11眼），Allergan SA40N（11眼），AcrySof SA60AT / SA30AL（5眼），角膜Quattro（4眼）。结果：AcrySof MA60BM组的DD平均值为（0.2643 + -0.1574）mm，Array SA40N组的DD平均值为（0.3536 + -0.1719）mm，SA60AT / SA30AL组的DD平均值为（0.3099 + -0.1529）mm，（ Quattro组为0.3261 + -0.1877）mm。这4种IOL的DD值差异无统计学意义（F = 0.506，P = 0.681），且不等于零（t = 10.508，P <0.001）。结论：Photoshop方法是一种简单有效的DD分析方法。当植入囊袋中时，现代的可折叠后室IOL具有良好的定心性能。

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