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| Effect of Radial Axial Incision on Corneal Astigmatism after Phacoemulsification |
| ZHANG Hong, CHEN Ying-ping, CHEN Sheng-wen |
| Department of Ophthalmology, the 2nd Affiliated Hospital of Hainan Medical University, Hankou, 570311,China |
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Abstract 【Objective】To explore the effect of radial axial incision on corneal astigmatism after ultrasonic phacoemulsification. 【Methods】A total of 60 cases (with 62 eyes) of cataract patients were selected from July 2017 to November 2015 in our hospital for the study. Patients were divided into the group A and group B randomly, with 30 cases in each group. Both groups received a corneal incision in the certain part of cornea. The incision of the group A was at the maximum corneal refractive radial axial and the incision of the group B was at the traditional temporal side (right eye) or nasal side (left eye). At the same time, patients in the two groups had ultrasonic phacoemulsification and foldable intraocular lens implantation. The astigmatism and axial direction of patients were measured by CT200 corneal topography before the surgery and after the surgery (at 1 day, 1 week and 1 month). The surgically derived astigmatism was calculated according to the corneal astigmatism and axial direction. Then, the data of corneal astigmatism, surgically induced astigmatism and visual acuity were compared between the two groups. 【Results】Postoperative visual acuity was significantly improved in the two groups (P<0.05), while there was no statistically significant difference in visual acuity between the two groups at 1 day, 1 week and 1 month after the operation (P>0.05). The corneal astigmatism of the two groups was not statistically significant at 1 day after surgery (P>0.05), while the corneal astigmatism in group A at 1 week and 1 month after surgery was significantly less than that in group B, and the difference was statistically significant (P<0.05). At 1 week and 1 month after surgery, the surgically derived astigmatism in group A was significantly lower than in group B(P<0.05). 【Conclusion】The incision at the maximum curvature of the cornea i.e. radial axial incision in cataract surgery can significantly reduce the corneal astigmatism and surgically derived astigmatism,which has good clinical application value.
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Received: 11 February 2019
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2020, Vol. 37 
