Effect on surgery induced astigatism in PHACO and implantation of IOL of Scleral tunnel incision and corneal tunnel incision

Objective: To investigate the effect on surgery induced astigamatism (SIA) in PHACX) and implantation of IOL of scleral tunnel incision and comeal tunnel incision. Methods: Seventy - three cases were divided into two groups: the first group with 3 to 5 mm line scleral tunnel incision(Ⅰ) and the second group with 3 to 4 mm comeal tunnel incision (Ⅱ). All the patients were performed PHACO and implantation of IOL. The uncorrected visual acuity and SIA were examined in 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 (P 0.05), but there was significant difference in SIA (P 0.05). Conclusions: The method of 3 to 5mm scleral incision in PHACO and implantation of IOL can increase the Safety of incision and the refraction is more stable than comeal tunnel incision in the early period after operation. There is no significant difference between two groups in the late period after operation.