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角膜散光是影响白内障术后视力恢复的重要因素之一［１］。传统的大于１０mm角膜缘白内障切口在术后较长时间内使患者角膜产生不可完全恢复的散光［２］。虽然超声乳化小切口白内障摘除术能使患者术后散光显著减少，视力得到迅速恢复，但是由于超声乳化仪设备昂贵，因而难以在
Corneal astigmatism is one of the important factors affecting visual acuity after cataract surgery [1]. Conventional greater than 10mm limbal cataract incision in the patient’s cornea after a long time can not be completely restored astigmatism [2]. Although phacoemulsification small incision cataract surgery patients can significantly reduce postoperative astigmatism, rapid recovery of visual acuity, but due to the phacoemulsification instrument expensive equipment, and thus difficult to