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.