用 FS200 femtosecond 激光和 moria SBK microkeratome 的角膜的拍动厚度的比较

• 作者: Jiang-Xiu Wu Jing Zhang Jing-Cai Lian Qing Yu Shi-Sheng Zhang
• 来源期刊: 国际眼科杂志：英文版
• 学科: 医学
• 关键词: corneal flap thickness FEMTOSECOND LASER LASER in situ KERATOMILEUSIS MICROKERATOME
• 年，卷（期）: 2014,（2）
• 页码范围: 273-277
• 页数: 5页
• 分类号: R772.2

摘要

AIM:To evaluate differences in flap thickness resulting from use of an Alcon Wavelight FS200 femtosecond laser and a MORIA SBK microkeratome when making a110-μm-thick corneal flap and to identify the potential factors that affect corneal flap thickness.METHODS:A prospective case study was performed on 120 eyes of 60 patients who were divided into two groups for LASIK,each group consisting of 60 eyes(30patients).The corneal flaps were created using an Alcon Wavelight FS200 femtosecond laser or a MORIA SBK microkeratome.The central corneal flap thickness was calculated by subtraction pachymetry.Age,central corneal thickness(CCT),spherical equivalent refraction,mean keratometry,and corneal diameter were recorded preoperatively for analysis.RESULTS:Cutting of all flaps was easily performed without intraoperative complications.In the Alcon Wavelight FS200 femtosecond laser group,the mean right and left corneal flap thicknesses were 114.0±6.6μm(range:98-126)and 111.4±7.6μm(range:98-122),respectively.The difference(2.6±9.1μm)in the corneal flap thickness between the right and left eyes was not significant(t=1.59,P=0.12).Stepwise regression analysis indicated that the resulting corneal flap thickness was unrelated to the patient’s age,preoperative CCT,spherical equivalent refraction,mean keratometry,or corneal diameter.In the MORIA SBK microkeratome group,the mean right and left corneal flap thicknesses were 110.6±7.4μm(range:97-125μm)and 108.2±6.1μm(range:78-123μm),respectively.The difference in the corneal flap thickness between the right and left eyes(2.4±6.5μm)was not significant(t=2.039,P=0.0506).Thecorneal flap thickness was positively correlated with the preoperative CCT through stepwise regression analysis(r=0.297,P=0.021).The corneal flap thickness was not related to age,spherical equivalent refraction,mean keratometry,or corneal diameter.The corneal flap thickness was estimated using the following equation:Tflap=67.77+0.076 CCT(F=5.63,P=0.021).CONCLUSION:Both the Alcon Wavelight FS200femtoseco