AIM： To evaluate the clinical pnd optical outcomes after clear corneal incision cataract surgery （ClCS） with three different incision sizes （1.8, 2.0 and 3.0 mm）. METHODS： Eyes of 150 patients with age-related c...AIM： To evaluate the clinical pnd optical outcomes after clear corneal incision cataract surgery （ClCS） with three different incision sizes （1.8, 2.0 and 3.0 mm）. METHODS： Eyes of 150 patients with age-related cataract scheduled for coaxial cataract surgery were randomized to three groups： 1.8, 2.0, or 3.0 mm CICS. Intraoperative data and postoperative outcomes including surgically induced astigmatism （SIA）, the corneal incision thickness, wavefront aberrations and modulation transfer function （MTF） of cornea were obtained. RESULTS： There were no significant differences among the three groups in demographic characteristics and intraoperative outcome. The 1.8 and 2.0 mm microincisions showed more satisfactory clinical outcomes than the 3.0 mm incision. The 1.8 mm incision showed significantly less SIA than the 2.0 mm incision until postoperative lmo （P〈0.05）, but the difference was only 0.14-0.18 D. Combined with less increased incision thickness only at postoperative ld （P=0.013）, the 1.8 mm incision presented better uncorrected distance visual acuity （UCDVA） than the 2.0 mm incision only at Id postoperatively （P=0.008）. For higher-order aberrations and other Zernike coefficients, there were no significant differences between the 1.8 mm group and 2.0 mm group （P 〉0.05）. CONCLUSION： Converting from 3.0 mm CICS to 1.8 or 2.0 mm CICS result in better clinical and optical outcomes. However, when incision is 1.8 mm, the benefits from further reduction in size compared with2.0 mm are limited. The necessity to reduce the incision size is to be deliberated.展开更多
基金Supported by the Key Program of the National Natural Science Foundation of China(No.81130018)National Twelfth Five-Year Plan Foundation of China(No. 2012BAI08B01)+1 种基金Zhejiang Key Innovation Team Project of China(No.2009R50039)Zhejiang Key Laboratory Fund of China(No.2011E10006)
文摘AIM： To evaluate the clinical pnd optical outcomes after clear corneal incision cataract surgery （ClCS） with three different incision sizes （1.8, 2.0 and 3.0 mm）. METHODS： Eyes of 150 patients with age-related cataract scheduled for coaxial cataract surgery were randomized to three groups： 1.8, 2.0, or 3.0 mm CICS. Intraoperative data and postoperative outcomes including surgically induced astigmatism （SIA）, the corneal incision thickness, wavefront aberrations and modulation transfer function （MTF） of cornea were obtained. RESULTS： There were no significant differences among the three groups in demographic characteristics and intraoperative outcome. The 1.8 and 2.0 mm microincisions showed more satisfactory clinical outcomes than the 3.0 mm incision. The 1.8 mm incision showed significantly less SIA than the 2.0 mm incision until postoperative lmo （P〈0.05）, but the difference was only 0.14-0.18 D. Combined with less increased incision thickness only at postoperative ld （P=0.013）, the 1.8 mm incision presented better uncorrected distance visual acuity （UCDVA） than the 2.0 mm incision only at Id postoperatively （P=0.008）. For higher-order aberrations and other Zernike coefficients, there were no significant differences between the 1.8 mm group and 2.0 mm group （P 〉0.05）. CONCLUSION： Converting from 3.0 mm CICS to 1.8 or 2.0 mm CICS result in better clinical and optical outcomes. However, when incision is 1.8 mm, the benefits from further reduction in size compared with2.0 mm are limited. The necessity to reduce the incision size is to be deliberated.
