Effect of 2.8mm clear corneal incisions in phacoemulsification on surgically induced corneal higher-order aberrations

AIM: To compare the changes of surgically induced corneal higher-order aberrations after phacoemulsification with 2.8mm clear corneal incisions at different sites.METHODS: The clinical data of 100 cases(100 eyes)of patients with cataract treated by phacoemulsification with 2.8mm clear corneal incision in our hospital from March 2015 to April 2016 were analyzed retrospectively. According to the site of incision, they were divided into Group A(temporal clear corneal incision, n=55)and Group B(upper clear corneal incision, n=45). Changes of the best corrected visual acuity(BCVA), surgically induced astigmatism(SIA)and corneal topography were compared between the two groups before surgery, at 1d, 1wk, 1 and 3mo after surgery. The corneal wavefront aberrations were measured by wavefront aberration analyzer, and the changes of higher-order aberrations in corneal 6mm range were recorded. RESULTS: The BCVA of two groups decreased at 1d, 1wk, 1 and 3mo after surgery(P