摘要
目的:比较鹰视酷眼和蔡司Mel80两种准分子激光机在矫正低、中度近视中的角膜切削厚度。方法:前瞻性对照研究。将近视患者58例108眼分为两组,其中31例55眼接受鹰视酷眼激光机行准分子激光原位角膜磨镶术(laser in situ keratomileusis,LASIK)治疗为A组,组内等效球镜在-0.50～-3.00D范围内为A1组(25眼),-3.25～-6.00D范围内为A2组(30眼)。27例53眼接受蔡司Mel80激光机治疗为B组,同法分为B1组(23眼)和B2组(30眼)。手术均采用小光斑随机飞点扫描Q值优化非球面切削模式,术中使用Moria2自动旋切式角膜板层刀制作角膜瓣,对治疗区直径及光学区等参数统一设定。术前及术后1mo行角膜厚度检查,其差值为角膜切削厚度实际值。分别比较A1和B1组间、A2和B2组间角膜切削厚度。统计学方法采用多个独立样本均数采用单因素方差分析。结果:A1,A2组角膜切削厚度的实际值与理论值比较,差别均无统计学意义(P=0.081,0.444)。B1,B2组角膜切削厚度的实际值低于理论值(P=0.000,0.000)。角膜切削厚度理论值A1组低于B1组(P=0.001),A2组低于B2组(P=0.000)。实际值A1与B1,A2与B2组差别无统计学意义(P=0.832,0.884)。结论:酷眼和Mel80准分子激光机的实际角膜切削厚度无差别。酷眼机的理论值与实际值一致,可用于准确预测切削量,Mel80机的理论值显著高于实际值。
AIM：To compare Wavelight Allgegrotto Wave Eye-Q and Zeiss Meditec MEL 80 Excimer Lasers about corneal ablation depth after customized aspheric ablation to correct mild and moderate myopia.METHODS：Prospective comparative study.58 cases（108 eyes） with myopia were randomly divided into two groups.31 cases（55 eyes） in group A were treated by Lasik with Wavelight Allgegrotto Wave Eye-Qand the other 27 cases（53 eyes） in group B were treated by Meditec Mel 80.The patients in group A were divided into group A1 and A2 according to the shortsighted degree,representing mild and moderate subsets respectively.The patients in group B were divided into group B1 and B2 as well.Both excimer lasers applied Q-index optimized ablation profile.Moria M2 Automatic Microkeratome was used to operate corneal flap.Treatment zone diameter and optical zone diameter were uniform in all cases.Corneal thickness were measured before and 1 month after surgery.Multiple independent sample mean used single-factor analysis of variance statistically.RESULTS：The actual corneal ablation depth and the theoretical corneal ablation depth didn＇t differ significantly in A1 and A2（P=0.081,0.444）.The actual corneal ablation depth was less significantly than theoretical corneal ablation depth in B1 and B2（P=0.000,0.000）.The theoretical corneal ablation depth in group A1 was significantly less than that in group B1（P=0.001） and similar in moderate subset groups（P=0.000）.Actual corneal ablation depth was no different between group A1 and B1（P=0.832）and similar in moderate subset groups（P=0.884）.CONCLUSION：Wavelight Allegretto Wave Eye-Q and Mel 80 excimers laser have similar actual corneal ablation depth.Theoretical corneal ablation depth in group A has no difference from the actual one and can be used to predict postoperative corneal thickness exactly.Theoretical corneal ablation depth in group B is much more than the actual one.
出处
《国际眼科杂志》
CAS
2011年第10期1730-1732,共3页
International Eye Science
