Factors that influence the surgical effects of astigmatic keratotomy after cataract surgery.
Factors that influence the surgical effects of astigmatic keratotomy after cataract surgery.
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DOI：
10.1016/s0161-6420(01)00629-7
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发表时间：
2001-07
期刊：
影响因子：
13.7
通讯作者：
Tomoyuki Inoue;N. Maeda;Kaoru Sasaki;Hitoshi Watanabe;Y. Inoue;K. Nishida;Y. Inoue;Shuji Yamamoto;Y. Shimomura;Y. Tano
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文献类型：
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作者：
Tomoyuki Inoue;N. Maeda;Kaoru Sasaki;Hitoshi Watanabe;Y. Inoue;K. Nishida;Y. Inoue;Shuji Yamamoto;Y. Shimomura;Y. Tano
目的探讨白内障术后出现反规则散光时影响角膜切开术（AK）手术效果的因素，并进行前瞻性非对照性干预病例系列研究。对所有受试者进行两个长度为3mm的线性切口（T形切口），深度为中心厚度的90%。对年龄、等效球镜、术前散光、角膜直径、角膜厚度、多元回归分析表明，术前散光与术前角膜曲率半径、眼轴偏移有关，（p = 0.014）和轴偏差（p = 0.005）与手术效果显著相关。术前散光量和术中眼轴失准会影响AK对逆规散光眼的手术效果。将术前散光量添加到列线图中，并改进手术程序，以获得更好的白内障手术后AK的手术预测性。
ObjectiveTo determine the factors affecting the surgical effect of astigmatic keratotomy (AK) when against-the-rule astigmatism is present following cataract surgery.DESIGNProspective interventional noncomparative case series.PARTICIPANTSTwenty eyes of 19 patients from four medical centers who had against-the-rule astigmatism following cataract surgery.INTERVENTIONAK with a 6 mm optical zone, two linear 3-mm length incisions (T-cut) and a depth of 90% of the central thickness was performed on all subjects.MAIN OUTCOME MEASURESVector analysis of astigmatic correction. Multiple regression analysis for seven covariates including age, spherical equivalent of the manifest refraction, preoperative astigmatism, corneal diameter, corneal thickness, mean radius of corneal curvature and axial misalignment.RESULTSMultiple regression analysis showed that the preoperative astigmatism (p = 0.014) and the axis deviation (p = 0.005) were significantly correlated with the surgical effects.CONCLUSIONSEven with a uniform surgical procedure, the surgical effects of AK in eyes with against-the-rule astigmatism can be affected by the amount of preoperative astigmatism and the intraoperative axis misalignment. Adding the amount of preoperative astigmatism to the nomogram and improvement of surgical procedures will be required to obtain better surgical predictability of AK following cataract surgery.