微型角膜刀吸引时间对猪角膜瓣厚度和直径的影响。
Effect of microkeratome suction duration on corneal flap thickness and diameter in pigs.
作者信息
Ma Xiao-Li, Xu Jian-Gang, Liu Han-Qiang
机构信息
Department of Ophthalmology, the First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning Province, China.
出版信息
Int J Ophthalmol. 2010;3(2):125-7. doi: 10.3980/j.issn.2222-3959.2010.02.07. Epub 2010 Jun 18.
AIM
To determine the effect of suction duration on thickness and diameter of corneal flap created by microkeratome in porcine eyes in laser in situ keratomileusis (LASIK).
METHODS
SIXTY PORCINE EYES WERE RANDOMLY ASSIGNED TO THREE GROUPS ACCORDING TO DIFFERENT SUCTION DURATIONS: group 1 (10 seconds), group 2 (20 seconds), and group 3 (30 seconds). A Moria M2 microkeratome (Moria, France) with a 160µm head was used to create a corneal flap. Corneal flap thickness was measured by automated ultrasonic pachymetry, and the flap diameter was measured by a vernier caliper.
RESULTS
The flap thickness of group 1, group 2 and group 3 was (146.05±13.46)µm, (157.35±18.95)µm and (169.25±21.02)µm, respectively. There was a statistically significant difference among three groups (P=0.001). The mean flap diameter in groups 1, 2 and 3 was(8.63±0.19)mm, (8.89±0.24)mm and (9.06±0.18)mm, respectively. A statisti-cally significant difference was found among groups (P<0.01).
CONCLUSION
In LASIK in porcine eyes, an increase in suction duration resulted in a thicker and greater flap.
目的
确定在准分子激光原位角膜磨镶术（LASIK）中，吸引时间对猪眼角膜板层刀制作的角膜瓣厚度和直径的影响。
方法
60只猪眼根据不同吸引时间随机分为三组：第1组（10秒）、第2组（20秒）和第3组（30秒）。使用头部直径为160µm的Moria M2角膜板层刀（法国Moria公司）制作角膜瓣。用自动超声角膜测厚仪测量角膜瓣厚度，游标卡尺测量角膜瓣直径。
结果
第1组、第2组和第3组的角膜瓣厚度分别为（146.05±13.46）µm、（157.35±18.95）µm和（169.25±21.02）µm。三组间差异有统计学意义（P = 0.001）。第1组、第2组和第3组角膜瓣平均直径分别为（8.63±0.19）mm、（8.89±0.24）mm和（9.06±0.18）mm。组间差异有统计学意义（P<0.01）。
结论
在猪眼LASIK手术中，增加吸引时间会导致角膜瓣更厚、更大。
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