摘要
目的比较IOLMaster和A超对中央前房深度（ACD）及眼轴（AL）测量结果，分析二者关系，验证IOLMaster生物学测量的准确性和可重复性。方法对46例88眼分别用IOLMaster和A超对ACD和AL进行5次连续测量并测量中央角膜厚度（CCT）。重复性用平均离散系数（COV）表示；两组之间比较用配对t检验；相关性用Pearson分析。结果IOLMaster和A超测量ACD和AL的平均值分别为：（3．08±0．44）mm、（24．06±2．36）mm和（2．63±0．51）mm、（23．87±2．11）mm。CCT：（0．518±0．031）mm。IOLMaster和A超测量ACD和AL的COV分别为0．52％，0．11％和12．4％，1．16％。二者测AL具有显著相关性（r=0．783；P〈0．001）；IOLMaster测量的ACD值大于A超测量值（大于0．45mm，P〈0．001），但没有显著的相关性（r=0．094P=0．546）；而将IOLMaster测量的ACD减去CCT值后两者间具有相关性（r=0．275；P=0．035）。结论与A超相比IOLMaster对ACD和AL的测量具有良好的可重复性和准确性，具有较好的临床应用前景。
Objective To evaluate the precision and reproducibility of IOLMaster for anterior chamber depth （ACD） and axial length （AL） measurements. To assess the degree of agreement of ACD and AL measurements by IOLMaster and contact ultrasound A-scan. Methods In this study of 88 eyes of 46 patients, ACD and AL estimation was done by. 2 methods. The same observer performed all measurements. Repeated measures coefficient of variation （COV） was used to analyze difference between ACD and AL measurements by the 2 methods. Difference in measurements between methods was assessed using the paired t test. The correlation between and measurements was assessed using Pearson rank conversion. Results The mean ACD （ ± SD） and AL（± SD） by 2 methods was 3.08 （±0.44） mm, 24.06 （±2.36） mm and 2.63 （±0.51） mm ,23.87 （± 2.11）mm, respectively. The mean CCT was 0.518 （ ± 0.031） mm. The reproducibility of IOLMaster of the AL and ACD measurements was very high （COV 0.52% and 0.11%, respectively）. The COV of ACD and AL by contact ultrasound A-scan was 12.4% and 1.16%, respectively. The correlation between ultrasound and optical ts was high （r=0.783; P〈0.001）; however, there was no correlation between ACD measurements （r=0.094, P=0.546）.But the correlation between ultrasound and optical ACD measurements-CCT was high （r=0.275; P=0.035）. Conclusions The results show that measurements for ACD and AL are precise and high reproducibility with the optical method.
出处
《中国实用眼科杂志》
CSCD
北大核心
2007年第1期63-65,共3页
Chinese Journal of Practical Ophthalmology
基金
“十五”国家科技攻关计划2003BA712A11-18
