近视眼LASIK术后非球面性研究  

Study on the anterior corneal asphericity of myopes after conventional LASIK

作　　者：杨佳[1] 王英[1] 刘伟民[1] 

机构地区：[1]广西壮族自治区人民医院视光科

出　　处：《中国临床新医学》2009年第10期1023-1024,共2页CHINESE JOURNAL OF NEW CLINICAL MEDICINE

基　　金：广西壮族自治区卫生厅基金课题(Z2006164)

摘　　要：目的探讨近视眼LASIK术后早期角膜非球面参数的变化规律。方法抽取2008-03~07来广西视光中心接受常规LASIK手术的25例近视患者(共49只眼),其中男13例,女12例;年龄19~36岁;屈光度-0.50^-10.50 DS(等效球镜)。采用美国Bause-Lomb公司生产的O rbscanⅡ-z角膜地形图对所有患者进行角膜地形图检测,收集每位患者常规LASIK术前、术后1周、1个月的角膜前表面Q值。将Q值按检测时间分组后,使用SPSS13.0统计软件,采用One-way ANOVA单因素方差分析,Games-Howell法比较三组间Q值的差异。结果近视患者LASIK术后1周的Q值与1个月的比较差异无统计学显著意义(P>0.05),但术前Q值与术后1周、1个月比较差异均有统计学极显著意义(P<0.01)。结论LASIK手术可使近视患者的角膜前表面发生明显改变。Objective To investigate the variation of Q values after conventional LASIK. Methods Twentyfive myopic conventional LASIK candidates （male 13, female 12） between March and July 2008 in Gnangxi vision science and optometry center, aged from nineteen to thirty six, and refractive power ranged from -0. 50 to - 10. 50 diopters （spherical equivalent） were enrolled retrospectively. Orbsean-Ⅱ z corneal topography （Bause-Lomb corp. made in USA） was used to capture each myopic corneal images at pre- and post-1 week and 1 month after conventional LASIK, respectively. And Q values were harvested at each time point in this study. One-way ANOVA and Games-Howell were used to compare Q values among the three time points by SPSS 13.0 version software. Results There was no significant differences in Q values between post-1 week and 1 month after LASIK（P 〉0.05）, but significant differences showed when Q values in pre-LASIK compared with post-1 week and 1 month after LASIK, respectively（ P 〈 0. 01 ）. Conclusion LASIK could drastically change myopic anterior corneal surface by improving Q values.

关 键 词：近视 LASIK Q值 

分 类 号：R778.1[医药卫生—眼科]