【摘要】 目的对MoriaM2130型(以下简称M2)一次性微型角膜刀头(自带刀片)与微型角膜刀片的角膜瓣制作效果进行比较。方法59例准分子激光原位角膜磨镶术(laser in situ keratomileusis,LASIK)手术患者(113眼),随机使用两种刀来制作角膜瓣,记录角膜瓣直径、蒂长,术后应用共焦显微镜测量瓣厚,记录术中和术后的并发症,对结果作统计分析比较。结果使用M2一次性刀头与M2刀片时,制作的角膜瓣平均厚度分别为(139.35±19.07)μm、(126.92±11.50)μm(t=4.096,P<0.01)。同一患者双眼使用同一把刀,两眼角膜瓣厚度无明显差异。术中角膜瓣的制作均一次成功,无严重并发症。结论M2型一次性刀头与刀片均具有安全性和稳定性。一次性刀头使用更方便,角膜瓣下干净,但角膜瓣厚度的平均值较高,标准误差较大。M2型刀片的角膜瓣制作效果相对稳定,但角膜瓣下残留相对多的金属颗粒。更多还原

【Abstract】 Objective To investigate the clinical effects of corneal flaps made by the Moria M2 130 plastic single-use microkeratome and the M2 Microkeratome blade in LASIK. Methods Fifty-nine patients (113 eyes) were randomly divided into two groups. The Moria M2 130 single-use microkeratome was used in group I (n=61) and the M2 microkeratome blade was used in group II (n=52) for LASIK. The suction ring was chosen according to corneal curvature and the stop-ring was adjusted to the 8.0mm position. The lengths of the corneal flaps and flap hinges, the thickness of the corneal flaps, and complications were recorded during and after operations. Results Mean corneal flap thickness in groups I and II was (139.35±19.07)μm and (126.92±11.50)μm, respectively. All flaps were successfully made and had no severe complications. 17% of the flaps had slight hemorrhaging during the procedure and the hemorrhaging stopped after the operation. There was no obvious metal debris under the flaps in group I but there was debris in group II. One case of DLK (grade I) was detected in group II and disappeared after one week. Conclusion It is safe and stable to use either the M2 single-use microkeratome or the M2 microkeratome blade in LASIK. Neither had severe complications. The M2 single-use microkeratome is convenient and the interface is clean, but the mean thickness of the corneal flaps and the standard deviation were higher, which is a risk factor when estimating the thickness of the remaining cornea. The corneal flap is more stable when using the M2 microkeratome blade, but there was more metal debris under the flap.更多还原