| 摘要: |
| ［摘要］ 目的 探讨常规LASIK术后早期近视患者点扩散函数变化规律。方法 抽取2008-03～07到广西视光中心接受常规LASIK手术的35例近视患者（共70只眼），其中男18例，女17例；年龄16～36岁；屈光度-0.50～-10.50DS（等效球镜）。采用美国VISX公司生产的WaveScan波前像差仪对所有患者进行波前像差检测，收集每位患者常规LASIK术前、术后1天、1周、1个月、3个月和6个月共六个时间点的点扩散函数数据。将点扩散函数数据按检测时间分组后，使用SPSS13.0统计软件，采用One-way ANOVA单因素方差分析，LSD法比较六组间点扩散函数值的差异。结果 35例近视患者术后早期的波前像差检测结果显示，点扩散函数值在术后各检测时间点均表现出不同程度的波动性。点扩散函数值在术后各时间点比较均无统计学差异（P>0.05），但术前与术后各时间点的点扩散函数值比较均存在统计学差异（P<0.01）。结论 LASIK手术可显著改善近视患者的视觉质量，术后早期近视患者的点扩散函数值维持相对稳定。 |
| 关键词: 近视 等效球镜 点扩散函数 |
| DOI：10.3969/j.issn.1674-3806.2009.08.03 |
| 分类号: |
| 基金项目:广西区卫生厅基金课题（Z2006164） |
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| Study on the variation of myopic point spread functions after conventional LASIK |
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HUANG Jian-zhong, ZHAO Wu-xiao, LIU Wei-min, et al.
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Department of Visual Science and Optometry Center, the People′s Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
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| Abstract: |
| ［Abstract］ Objective To investigate the variation of myopic point spread functions after conventional LASIK.Methods Thirty five myopic out-patients (male 18, female 17) underwent conventional LASIK between March and July 2008 in Guangxi visual science and optometry center, aged from sixteen to thirty six years, and refractive power ranged from -0.50 to -10.50 diopters(spherical equivalent) were enrolled retrospectively. WaveScan® system(Visx corp. made in USA) was used to capture each myopic wavefront aberration images at pre-LASIK, post-1 day, 1 week, 1 month, 3 months and 6 months after conventional LASIK, respectively. Efficient blur was used as a parameter of myopic optical quality. One-way ANOVA and LSD were analyzed to compare point spread function values among the six time points by SPSS 13.0 version software.Results All 35 myopic wavefront aberrations examined by WaveScan system showed that myopic PSF values after LASIK were different from each other, and statistic significant differences were found between pre- and post-LASIK(all P<0.05), but there were no significant differences in PSF among each time points after LASIK(P>0.05).Conclusion LASIK could drastically improve myopic visual quality. And myopic PSF values keep relatively stable at early period after conventional LASIK. |
| Key words: Myopia Spherical equivalent Point spread function |
