Wang Lijun, Yang Xiting, Zhang Yi, Liao Dingying, Zhao Lin, Wang Jianming
Department of Ophthalmology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China.
Nan Fang Yi Ke Da Xue Xue Bao. 2018 Dec 30;38(12):1492-1497. doi: 10.12122/j.issn.1673-4254.2018.12.15.
To determine the safe distance range of clear corneal incision (CCI) from the corneal limbus and how different CCI sites affect surgery efficacy and anterior segment parameters in patients undergoing phacoemulsification.
This retrospective case-control study was conducted in 44 patients (44 eyes) undergoing phacoemulsification and IOL implantation. The patients were divided into two groups with CCI distances ranging from 1 mm to 1.5 mm (group A, = 22) and from 0.5 mm to 1.0 mm (group B, = 22). The visual acuity, surgically induced astigmatism (SIA), corneal aberration, and anterior segment parameters were analyzed.
Compared with the preoperative data, all the patients showed significant improvements in the postoperative uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), anterior chamber depth (ACD), and anterior chamber angle (ACA) after the surgery ( < 0.05). No significant differences were found between the two groups in postoperative UCVA, BCVA, SIA, total corneal aberration RMS, lower- and higher-order aberration RMS, spherical aberration (Z), horizontal three leaf clover (Z), vertical three leaf clover(Z), horizontal coma(Z), vertical coma(Z), ACD, ACA, anterior chamber volume, or central corneal thickness (>0.05).
Phacoemulsification is an effective therapy for cataract with a CCI distance range either of 1-1.5 mm or 0.5-1.0 mm. These two CCI distance ranges produce no significant differences in the visual quality following phacoemulsification, indicating that a CCI distance range of 0.5-1.5 mm can be safe for phacoemulsification.
确定透明角膜切口（CCI）距角膜缘的安全距离范围，以及不同的CCI位置对白内障超声乳化手术患者手术效果和眼前节参数的影响。
本回顾性病例对照研究纳入了44例行超声乳化白内障吸除联合人工晶状体植入术的患者（44只眼）。患者被分为两组，CCI距离为1 mm至1.5 mm的为A组（n = 22），CCI距离为0.5 mm至1.0 mm的为B组（n = 22）。分析视力、手术源性散光（SIA）、角膜像差和眼前节参数。
与术前数据相比，所有患者术后裸眼视力（UCVA）、最佳矫正视力（BCVA）、前房深度（ACD）和前房角（ACA）均有显著改善（P < 0.05）。两组患者术后UCVA、BCVA、SIA、角膜总像差均方根（RMS）、低阶和高阶像差RMS、球差（Z）、水平三叶苜蓿像差（Z）、垂直三叶苜蓿像差（Z）、水平彗差（Z）、垂直彗差（Z）、ACD、ACA、前房容积或中央角膜厚度比较，差异均无统计学意义（P > 0.05）。
超声乳化白内障吸除术是治疗白内障的有效方法，CCI距离范围为1 - 1.5 mm或0.5 - 1.0 mm均可。这两个CCI距离范围在超声乳化术后的视觉质量上无显著差异，表明0.5 - 1.5 mm的CCI距离范围对超声乳化手术可能是安全的。
