Effect on surgery induced astigatism in PHACO and implantation of IOL of Scleral tunnel incision's position.

Objectiye:To investigate the effects on surgery induced astigamatism(SIA) in PHACO and implantation of IOL of scleral tunnel incision's position.Methods:74 case were divided into two groups,the first group with line scleral tunnel incision at 10-11 o'clock(I).and the second group with line scleral tunnel incision at 12 o'clock(II).All patients were performed PHACO and implantation of IOL.The uncrrected visual acuity.SIA were examined at one week,two weeks,one month,three months and six months after operation.Results:There was no significant difference in UCVA between two groups during periods after operation(P0.05),significant difference in SIA(P0.05).Conclusions: with the method of scleral incision at 10-11 o'clock in PHACO and implantation of IOL,the refraction were more stable than the incision at 12 o'clock in the early period after operation.There wers no significant difference between two groups in the late period after operation.