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目的 比较不同方法测量角膜塑形术治疗前后角膜曲率的差异。方法 分别用SRK 90 0 0型角膜曲率计和DICONCT 2 0 0型角膜地形图仪于治疗前及治疗后 3个月分别测量角膜水平曲率和垂直曲率各 3次 ,取其均值比较。结果 角膜塑形术治疗前 ,两种方法测量结果比较差异无显著性(P >0 0 5 )。治疗后 ,角膜曲率计测量值 ,水平曲率、垂直曲率值均低于角膜地形图。结论 角膜塑形术治疗后 ,角膜弯曲度、球面性的改变及其设计理论可能影响角膜地形图的测定结果。给矫正欠佳病例再次配角膜塑形镜时应当用两种方法测量角膜曲率 ,互相参照 ,为再次矫正提供保障。
Objective To compare the difference of corneal curvature before and after orthokeratology by different methods. Methods Corneal horizontal curvature and vertical curvature were measured respectively three times before and three months after treatment with SRK 90 0 corneal curvature meter and DICONCT 2000 corneal topography instrument respectively. Results Before the orthokeratology treatment, there was no significant difference between the two methods (P> 0.05). After treatment, keratometer measurements, horizontal curvature, vertical curvature values were lower than the corneal topography. Conclusion Corneal surgery, corneal curvature, spherical changes and its design theory may affect the results of corneal topography. To correction of poor cases of orthokeratology lens again with two methods should be used to measure corneal curvature, mutual reference, to provide protection for re-correction.