Moria M2双马达旋转刀角膜瓣制作的结果与分析

目的　探讨MoriaM2 双马达旋转刀制作角膜瓣的效果与技巧。方法　采用MoriaM2 双马达旋转刀为 4 0 9例 (80 6只眼 )行准分子激光原位角膜磨镶术 (LASIK)的患者制作角膜瓣。刀头选择130 ,负压 <2 5 0mmHg(1mmHg =0 133kPa) ,终止环设定在 8 0位置 ,吸力环根据角膜曲率表选择。结果　所有患眼角膜瓣均一次制作成功 ,无破碎瓣、薄瓣及未到达瓣 ,蒂大小适中 ,瓣翻转自如 ,复位容易。无卡刀、中途停顿及停停走走现象。角膜瓣边缘整齐 ,无锯齿样改变 ,角膜基质床光滑。术中出现游离瓣者 3只眼 (0 37% ) ;出现“岛屿现象” ,即角膜基质床有不规则隆起 ,呈孤立的片状或条状者 2只眼 (0 2 5 % ) ;发生走空刀现象者 3只眼 (0 37% )。结论　MoriaM2 双马达旋转刀制作角膜瓣的效果较好 ,无严重并发症。按角膜曲率选择吸力环 ,正确插入刀片及术前检查刀片可避免术中并发症。

The results and analysis of making corneal flaps with Moria M(2) microkeratome in LASIK

OBJECTIVE: To investigate the results and technology of making corneal flaps with Moria M(2) microkeratome. METHODS: Eight hundred and six corneal flaps (in 409 cases) were made using Moria M(2) microkeratome in LASIK. The group consisted of 205 males (405 eyes), whose mean age was (23.61 +/- 5.44) years, mean refractive spherical equivalent was (-6.32 +/- 3.61) D, and mean corneal thickness was (542.72 +/- 29.54) micro m. The 130-micron head option was chosen, the pressure was less than 250 mm Hg (1 mm Hg = 0.133 kPa), the stop-ring was adjusted to the 8.0 mm position and the suction ring was chosen according to corneal curvatures. RESULTS: All 806 corneal flaps were made successfully at one time with suitable hinge size, and without ruptured or thin or incomplete flaps. Flaps could be turned and reattached easily. There was no breaking down during the surgical procedure. The flaps showed smooth edges with smooth keratectomy beds. Complications: (1) Free flaps occurred in 3 eyes (0.37%). (2) Island phenomenon occurred in 2 eyes (0.25%). (3) Failure to make the flaps occurred in 3 eyes (0.37%). CONCLUSION: All 806 corneal flaps were made successfully at one time with no serious complications. Choosing the suction ring according to corneal curvature, checking blades preoperatively and inserting blades correctly may help to avoid complications when making corneal flaps with Moria M(2) microkeratome.