The early change of corneal vertical coma and trefoil in 2.8-mm superior incision cataract surgery  

作　　者：Yali Du Lixia Sun Mingzhi Zhang 

机构地区：[1]Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong

出　　处：《Eye Science》2017年第1期39-43,共5页眼科学报（英文版）

摘　　要：Background: To investigate early change of corneal aberrations after 2.8-mm superior incision phacoemulsification.Methods: This study comprised 80 eyes of 75 patients. All the patients underwent phacoemulsification with monofocal foldable intraocular lens(IOLs) implanted through a 2.8-mm superior corneal incision. The anterior corneal wavefront aberrations for the 6.0-mm pupillary diameter was measured by i Trace wavefront aberrometer(Tracey Technologies, Inc.) preoperatively and 1 month postoperatively. Changes of root mean square(RMS) values of Z(3,-3), Z(3, 3), Z(3,-1), Z(3, 1), and Z(4, 0) and total high order aberration(HOA) were evaluated.Results: The uncorrected and corrected visual acuities improve significantly(P<0.001). No significant postoperative changes were observed in spherical aberration(P=0.652). Significant changes in vertical coma and vertical trefoil(0.005±0.214 vs.-0.049±0.242, P=0.037;-0.141±0.222 vs.-0.258±0.359, P=0.001; separately). However, the total HOAs increased after cataract surgery(0.567±0.161 vs. 0.688±0.343, P<0.001).Conclusions: Corneal vertical coma and vertical trefoil changes significantly in 2.8mm superior corneal incision phacoemulsification cataract surgery. In addition, those had a trend to negative direction.Background： To investigate early change of corneal aberrations after 2.8-mm superior incision phacoemulsification. Methods： This study comprised 80 eyes of 75 patients. All the patients underwent phacoemulsification with monofocal foldable intraocular lens （IOLs） implanted through a 2.8-mm superior corneal incision. The anterior corneal wavefront aberrations for the 6.0-mm pupillary diameter was measured by iTrace wavefront aberrometer （Tracey Technologies, Inc.） preoperatively and 1 month postoperatively. Changes of root mean square （RMS） values of Z（3, -3）, Z（3, 3）, Z（3, -1）, Z（3, 1）, and Z（4, 0） and total high order aberration （HOA） were evaluated. Results： The uncorrected and corrected visual acuities improve significantly （P〈0.001）. No significant postoperative changes were observed in spherical aberration （P=0.652）. Significant changes in vertical coma and vertical trefoil （0.005±0.214 vs. -0.049±0.242, P=0.037; -0.141±0.222 w-. -0.258±0.359, P=0.001; separately）. However, the total HOAs increased after cataract surgery （0.567±0.161 vs. 0.688±0.343, P〈0.001）. Conclusions： Corneal vertical coma and vertical trefoil changes significantly in 2.8mm superior corneal incision phacoemulsification cataract surgery. In addition, those had a trend to negative direction.

关 键 词：Small incision cataract surgery corneal aberration vertical coma vertical trefoil 

分 类 号：R779.6[医药卫生—眼科]