目的比较lenstar LS 900与角膜超声测厚仪测量人中央角膜厚度(CCT)的差异,为临床检查提供参考。方法选取屈光手术者26例(52只眼),分别用lenstar LS 900和角膜超声测厚仪测量双眼CCT,两种仪器均测量3次或以上,取其平均值,对所得数据进行...目的比较lenstar LS 900与角膜超声测厚仪测量人中央角膜厚度(CCT)的差异,为临床检查提供参考。方法选取屈光手术者26例(52只眼),分别用lenstar LS 900和角膜超声测厚仪测量双眼CCT,两种仪器均测量3次或以上,取其平均值,对所得数据进行统计学分析。结果 52只眼CCT测量结果:lenstar LS 900为(538.27±40.38)μm,A超为(534.15±41.12)μm。两种测量方法结果差异有统计学意义(t=2.9643,P<0.005)。但测量结果高度相关(r=0.970),前者所测CCT较后者厚(4.11±10.11)μm。结论 lenstar LS 900与角膜超声测厚仪对CCT的测量结果呈较高的相关性,两种仪器具有较高的测量准确性,lenstar LS 900可以作为角膜厚度的测量工具之一。展开更多
AIM：To determine the repeatability of Ophtha Top topography and assess the consistency with intraocular lens（IOL）-Master and Lenstar LS900（Lenstar）in measuring corneal parameters among cataract patients.METHODS：...AIM：To determine the repeatability of Ophtha Top topography and assess the consistency with intraocular lens（IOL）-Master and Lenstar LS900（Lenstar）in measuring corneal parameters among cataract patients.METHODS：Totally 125 eyes were enrolled.Corneas were successively measured with Ophtha Top,IOL-Master and Lenstar at least three times.The flattest meridian power（Kf）,the steepest meridian power（Ks）,mean power（Km）,J0 and J45 were recorded.Intra-class correlation coefficients（ICCs）,the coefficient of variance（COV）,within subject standard deviation（Sw）,and test-retest repeatability（2.77Sw）were adopted to determine the repeatability.The 95%limit of agreement（95%LOA）and Bland-Altman plots were used to assess comparability.RESULTS：Repeatability of Ophtha Top topography for measuring corneal parameters showed the ICCs were all above 0.93,2.77Sw was lower than 0.31,and the COV of the Kf and Ks was lower than 0.25.The keratometric readings with Ophtha Top topography were flatter than with the IOLMaster and Lenstar devices,while the Pearson correlation coefficients were over 0.97.The J0 and J45 with Ophtha Top topography were smaller compared with Lenstar and IOL-Master,while was comparable between Lenstar and IOL-Master.CONCLUSION：Ophtha Top topography shows excellent repeatability for measuring corneal parameters.However,differences between the Ophtha TOP topography and Lenstar,IOL-Master both in cornea curvature and the astigmatism should be noted clinically.展开更多
文摘目的比较lenstar LS 900与角膜超声测厚仪测量人中央角膜厚度(CCT)的差异,为临床检查提供参考。方法选取屈光手术者26例(52只眼),分别用lenstar LS 900和角膜超声测厚仪测量双眼CCT,两种仪器均测量3次或以上,取其平均值,对所得数据进行统计学分析。结果 52只眼CCT测量结果:lenstar LS 900为(538.27±40.38)μm,A超为(534.15±41.12)μm。两种测量方法结果差异有统计学意义(t=2.9643,P<0.005)。但测量结果高度相关(r=0.970),前者所测CCT较后者厚(4.11±10.11)μm。结论 lenstar LS 900与角膜超声测厚仪对CCT的测量结果呈较高的相关性,两种仪器具有较高的测量准确性,lenstar LS 900可以作为角膜厚度的测量工具之一。
文摘AIM：To determine the repeatability of Ophtha Top topography and assess the consistency with intraocular lens（IOL）-Master and Lenstar LS900（Lenstar）in measuring corneal parameters among cataract patients.METHODS：Totally 125 eyes were enrolled.Corneas were successively measured with Ophtha Top,IOL-Master and Lenstar at least three times.The flattest meridian power（Kf）,the steepest meridian power（Ks）,mean power（Km）,J0 and J45 were recorded.Intra-class correlation coefficients（ICCs）,the coefficient of variance（COV）,within subject standard deviation（Sw）,and test-retest repeatability（2.77Sw）were adopted to determine the repeatability.The 95%limit of agreement（95%LOA）and Bland-Altman plots were used to assess comparability.RESULTS：Repeatability of Ophtha Top topography for measuring corneal parameters showed the ICCs were all above 0.93,2.77Sw was lower than 0.31,and the COV of the Kf and Ks was lower than 0.25.The keratometric readings with Ophtha Top topography were flatter than with the IOLMaster and Lenstar devices,while the Pearson correlation coefficients were over 0.97.The J0 and J45 with Ophtha Top topography were smaller compared with Lenstar and IOL-Master,while was comparable between Lenstar and IOL-Master.CONCLUSION：Ophtha Top topography shows excellent repeatability for measuring corneal parameters.However,differences between the Ophtha TOP topography and Lenstar,IOL-Master both in cornea curvature and the astigmatism should be noted clinically.
