角膜刀与飞秒激光制作角膜瓣对患者视力及角膜瓣厚度的影响

发布时间：2018-12-21 09:47

【摘要】：目的对比观察角膜刀与飞秒激光制作角膜瓣对患者视力及角膜瓣厚度的影响。方法将100例(200眼)近视患者随机分为角膜刀组与飞秒激光组各50例(100眼),均行准分子激光原位角膜磨镶术,术中分别采用自动旋转式显微角膜刀、Wavelight FS200飞秒激光制作角膜瓣;采用眼前节相干光断层扫描仪测量术后第1个月时角膜瓣厚度,采用视力表检查术后第1、3个月时裸眼视力(UCVA)及屈光度。结果两组术后第1、3个月时UCVA及屈光度比较差异无统计学意义(P均0.05)。在0°与90°经线截面上两组角膜瓣平均厚度、不同测量点厚度在组内对应点比较差异无统计学意义(P均0.05),飞秒激光组角膜瓣平均厚度、同一测量点的厚度均薄于角膜刀组(P均0.05);在0°与90°经线截面角膜刀组组内在5个测量点间角膜瓣厚度比较差异有统计学意义(P均0.05),飞秒激光组组内在5个测量点间角膜瓣厚度比较差异无统计学意义(P均0.05)。结论采用准分子激光原位角膜磨镶术治疗近视患者时,术中以角膜刀及飞秒激光制作角膜瓣对患者术后视力改善无明显差别,但飞秒激光治疗的角膜瓣更薄、精确度高、形态规整、预测性更好。
[Abstract]:Objective to observe the effect of corneal flap made by keratknife and femtosecond laser on the visual acuity and corneal flap thickness. Methods 100 cases (200 eyes) of myopia were randomly divided into two groups: corneal knife group (n = 50) and femtosecond laser group (n = 100). Excimer laser in situ keratomileusis was performed. Corneal flap was fabricated by Wavelight FS200 femtosecond laser. The corneal flap thickness was measured by the anterior segment coherence tomography at the first month after operation. The naked visual acuity (UCVA) and diopter were examined by visual acuity chart at the 1st and 3rd month after operation. Results there was no significant difference in UCVA and diopter between the two groups at the 1st and 3rd month after operation (P 0.05). There was no significant difference in the mean thickness of corneal flap between the two groups at 0 掳and 90 掳longitude cross-section, and there was no significant difference in the thickness of corneal flap between the two groups (P 0.05), but the average thickness of corneal flap in femtosecond laser group was higher than that in femtosecond laser group. The thickness of the same measuring point was thinner than that of the corneal knife group (P 0.05). There were significant differences in corneal flap thickness between 0 掳and 90 掳meridional cross-sectional corneal tissue groups (P 0.05). There was no significant difference in corneal flap thickness between 5 measurement points in femtosecond laser group (P 0.05). Conclusion in the treatment of myopia with laser in situ keratomileusis, the corneal flap made by keratknife and femtosecond laser has no significant difference in the improvement of postoperative visual acuity, but the corneal flap treated by femtosecond laser is thinner and more accurate. The shape is regular, the predictability is better.
【作者单位】：深圳爱尔眼科医院;
【分类号】：R779.63

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