摘要
目的 :对使用角膜地形图仪与角膜曲率计测量角膜散光结果进行对比研究。方法 :对角膜散光小于 1.5 D的患者 113名 132眼 ,使用美国 Alcon公司的 EYEMAPTM EH- 2 90角膜地形图仪和瑞士 HAAG STREIT BERN角膜曲率计测量角膜散光。结果 :角膜地形图仪测得角膜曲率显著大于角膜曲率计测得相应值 ,两种仪器测得的角膜散光无显著差异 ,散光轴向符合率随散光度增大而增加。结论 :角膜地形图系统测量角膜散光更准确、全面 ,尤其对角膜过陡。
To compare the corneal astigmatism measured by using corneal topographer and keratometer.Methods:We tested corneal astigmatism of 113 patients (132 eyes)by using topographer (EYEMAP TM EH 290,ALCON,USA)and keratometer(HAAG STREIT BERN,SWISS),all the patientscorneal astigmatism was less than 1 5D.Results:we found that both the highest and the smallest curvature measured by the topographer were significantly higher than that by the keratometer (P<0 05).But the astigmatism was similar by using the two methods(P>0 05).The rate of patients with the differences of astigmatic axis below 20° was 68 94%,which was examined by the two methods;and it rose with the increase of astigmatism.Conclusions:The corneal astigmatism measured by the topographer was more accurate than that measured by the keratometer,especially for the patientscornea was too steep,flat or with irregular astigmatism.
出处
《中国实用眼科杂志》
CSCD
2000年第12期804-805,共2页
Chinese Journal of Practical Ophthalmology
