AIM:To study the impact of two different phacoe- mulsification incisions on the surgically induced postoperative corneal astigmatism inage-related cataract patients.METHODS:Patients who had undergone the phaco-surgery from August 2011 to December 2011 were randomly divided into two groups. And those with incisions on the edge of the upper sclera (11∶00 to 12∶00) were group A, thirty cases 32 eyes. And group B, thirty-two cases (35 eyes) were those with the 3.2mm wide transparent cornea of the temporal side. In order to compare the impact of two different phacoemulsification incisions on the surgically induced corneal astigmatism in group A and B, we observed and measured carefully the corneal astigmatism status in various stages of pre-operation and post-operation (we sampling four stages:pre-surgery, one week, one month and three months after surgery) under the help of the corneal curvature instrument. All experimental data were showed by the means of average value±standard D-value. We adopted ttest to make statistical analysis, which means only when P<0.05 could those differences get statistical significance.RESULTS:By comparing the corneal curvature rate of those two groups in their stage of pre-operation and one week after surgery respectively, there was no significant difference and also no statistical meaning for their results P>0.05. However, the statistical comparison of the data got from the stage of one month and three months after surgery indicated that the surgically induced corneal astigmatism of group A was more significant than group B.CONCLUSION:The phacoemulsification incisions on the transparent cornea of the temporal side owns the advantages of relatively short time, minor surgical complications and less adverse effects on corneal astigmatism. 