Clinical observation on corneal astigmatism after small incision surgery of non-phacoemmulsification and IOL implantation

Objective To evaluate the changes of corneal astigmatism after small incision surgery of non-phacoemmulsification and IOL implantation with common lens loop and iris repositor,and observe the clinical effect of the surgery.Methods Seventy-six patients (80 eyes) with cataract were divided into two groups based on the length of incision.Group A was small incision group,and group B was big incision group.Corneal astigmatism of group A and B before and after operation were measured and compared.Results Three months after the operation,the percent of naked vision better than 1.0 in group A and B were 78.6%,65.4% respectively,there was significant difference between two groups(χ2= 46.08,P0.01).In group A,the mean corneal astigmatism before operation was (0.92±0.87)D,and at 3 months after operation was (0.53 ±0.56)D,which decreased 0.39 D,and there was significant difference (u=2.267,P0.05).In group B,the mean corneal astigmatism at 3 months after operations was (0.62±0.67)D,there was significant difference between two group (u=2.016,P0.05).Conclusion After the small incision surgery,the corneal astigmatism is small,and the visual acuity is easy to recover.The surgery is safe and convenient,and easy for extensive basic hospital.