AIM: To investigate the clinical effect of 2.2mm micro incision phacoemulsification.

METHODS: From January 2015 to February 2016, 93 cases with 112 eyes who underwent cataract phacoemulsification combined with intraocular lens implantation in our hospital, were selected and randomly divided into micro incision group(47 cases 52 eyes)and traditional incision group(46 cases 60 eyes),micro incision group underwent 2.2mm coaxial micro incision, traditional incision group underwent 3.2mm incision. We observed average phacoemulsification energy(AVE), effective phacoemulsification time(EPT), corneal endothelial cell count of the two groups.

RESULTS: Preoperative and postoperative corneal endothelial cells of two groups showed no significant difference(P>0.05). The loss rate of corneal endothelial cells in the micro incision group and the traditional incision group were(12.09±4.14)% and(13.24±5.44)%, and the difference was not statistically significant(P>0.05). Micro incision group AVE was(10.01±3.21)%, significantly lower than that of the traditional incision group(P<0.05). There was no significant difference in EPT between the two groups(P>0.05). There was no significant difference on the preoperative and postoperative naked eye LogMAR vision between the micro incision group and the traditional incision group(P>0.05). The micro incision group postoperative 1wk, 1 and 3mo astigmatism were 0.47±0.12, 0.40±0.10 and 0.36±0.12, which was significantly less than that of the traditional incision group(P<0.05). No serious complications were found in the two groups intraoperatively and postoperatively.

CONCLUSION: The new surgery 2.2mm micro incision phacoemulsification can effectively save ultrasonic energy, reduce surgical astigmatism, and is conducive to improve the visual quality. Its damage to corneal endothelial cells is similar to traditional incisions.