From the Fondazione G.B. Bietti IRCCS (Serrao, Schiano-Lomoriello, Ducoli, Rosati, M. Lombardo) and Vision Engineering (G. Lombardo), Rome, and the CNR-IPCF Unit of Support of Cosenza (G. Lombardo), University of Calabria, Rende, Italy.
From the Fondazione G.B. Bietti IRCCS (Serrao, Schiano-Lomoriello, Ducoli, Rosati, M. Lombardo) and Vision Engineering (G. Lombardo), Rome, and the CNR-IPCF Unit of Support of Cosenza (G. Lombardo), University of Calabria, Rende, Italy.
J Cataract Refract Surg. 2014 Apr;40(4):531-7. doi: 10.1016/j.jcrs.2013.11.027. Epub 2014 Feb 20.
To evaluate changes in anterior corneal topography after femtosecond laser-created clear corneal incisions (CCIs).
Fondazione G.B. Bietti IRCCS, Rome, Italy.
Comparative case series.
Phacoemulsification was performed through a 2.75 mm incision. In the study group, a 3-plane CCI was created using a 150 kHz femtosecond laser. In the control group, a single-plane angled CCI was created using disposable knives. Placido disk corneal topography was performed preoperatively and 1 week and 1 month postoperatively. Central curvature (simulated keratometry [K]) and local changes in anterior corneal topography at the CCI site were evaluated and compared between groups.
No significant changes in the mean simulated K values were found in either group postoperatively (P>.05). The preoperative to 1-month postoperative mean simulated K ranged between 43.30 diopters (D)±0.82 (SD) and 43.17±0.82 D in the study group and between 43.34±1.44 D and 43.29±1.48 D in the control group. The method of CCI creation significantly influenced the changes in the anterior central topography during the first month postoperatively (P<.001). Greater steepening of the incision edges was found in the control group (mean 36.60±4.13 D to 37.74±2.39 D) than in the study group (mean 38.81±2.91 D to 39.15±4.48 D).
The 2.75 mm 3-plane femtosecond CCIs induced slight changes in the anterior central corneal topography, similar to single-plane angled manual incisions. Topographic differences between the femtosecond method and manual method were found at the CCI site.
No author has a financial or proprietary interest in any material or method mentioned.
评估飞秒激光制作的透明角膜切口（CCI）后前角膜地形的变化。
意大利罗马 Fondazione G.B. Bietti IRCCS。
对比病例系列。
通过 2.75mm 切口行超声乳化白内障吸除术。研究组采用 150kHz 飞秒激光制作 3 平面 CCI，对照组采用一次性刀片制作单平面倾斜 CCI。术前及术后 1 周和 1 个月行 Placido 盘角膜地形图检查。评估并比较两组中央曲率（模拟角膜曲率 [K]）和 CCI 部位前角膜地形的局部变化。
两组术后平均模拟 K 值均无显著变化（P＞.05）。研究组术前至术后 1 个月平均模拟 K 值在 43.30 屈光度（D）±0.82（标准差）和 43.17±0.82D 之间，对照组在 43.34±1.44D 和 43.29±1.48D 之间。CCI 制作方法显著影响术后第 1 个月前中央地形的变化（P＜.001）。对照组切口边缘变陡更明显（平均 36.60±4.13D 至 37.74±2.39D），而研究组（平均 38.81±2.91D 至 39.15±4.48D）则较轻。
2.75mm 3 平面飞秒 CCI 引起前中央角膜地形的轻微变化，与单平面倾斜手动切口相似。飞秒法与手动法在 CCI 部位存在地形差异。
没有作者对任何提到的材料或方法有财务或专有利益。
