AIM: To evaluate the effect of the chosen incision on corneal astigmatism after implantable collamer lens ( ICL) surgery. METHODS:The study included 195 eyes of 102 patients, and all eyes were randomly divided into two groups: the chosen incision group ( Group A, 97 eyes) and temporal corneal incision ( Group B, 98 eyes ) . Before the operation, and 1wk, 1mo and 3mo after the operation, each patient was examined with corneal topography to observe the changes of corneal astigmatism. RESULTS: Preoperative corneal astigmatisms were (1-26±0. 35) D in group A and (1. 28±0. 38) D in group B, thus there was no statistically significant difference ( P>0-05). One week postoperatively, the astigmatism were (0.93±0.29)D in group A and (1.32±0.33)D in group B. One month postoperatively, the astigmatism were (0. 85±0.16)D in group A and (1.27±0.18)D in group B. Three months postoperatively, the astigmatism were ( 0. 80±0-13)D in group A and (1. 25±0. 20) D in group B. The differences between the two groups were statistically significant (P<0. 01). CONCLUSION: The chosen incision can reduce postoperative astigmatism to a certain extent after ICL surgery.%目的：探讨选择性手术切口对ICL (有晶状体眼后房型人工晶状体)术后散光控制的作用。 方法：高度近视患者102例195眼,随机分成选择性切口组(A组)97眼和颞侧角膜切口组(B 组)98眼,通过术前、术后1 wk；1,3 mo分别行角膜地形图检查,观察患者术后散光的变化。 结果：A组术前平均角膜散光为1.26±0.35D,B组术前平均角膜散光为1.28±0.38D,两组差异无统计学意义。 A组术后1wk；1,3mo的平均散光分别为0.93±0.29,0.85±0-16,0.80±0.13 D；B组术后1 wk；1,3 mo的平均散光分别为1.32±0.33,1.27±0.18,1.25±0.20D,两组差异有统计学意义。 结论：选择性手术切口能在一定程度上控制 ICL 术后散光。
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