IOLMaster与A超在临床中的对比研究

Difference and correlation between IOLMaster and A ultrasound in clinic

目的:通过IOLMaster和A超对白内障患者不同眼轴及前房深度的测量的比较,探讨两者之间的差异性和相关性。方法:收集本院2010-03/08眼科白内障患者分别进行IOLMaster与A超术前检查,取两项检查均有结果者进行研究。所有患者术前经同一位医师进行测量。首先进行无创IOLMaster标准测量,测量眼轴长度及前房深度,取平均值;然后对比采用10Hz A超测量,取平均值,得到前房深度及眼轴长。结果:眼轴长度A超和IOLMaster在眼轴<22mm时差异有统计学意义(P=0.001)。在眼轴>26mm和22～26mm时,P=0.808,P=0.405,没有统计学意义;眼轴长度A超和IOLMaster相关系数分别为r=0.998,r=0.991,r=0.783,在眼轴>26mm和22～26mm时高度相关。而<22mm时中度相关。前房深度A超和IOLMaster相关系数分别为r=0.851,r=0.628,r=0.673,均为中度相关。结论:本实验发现眼轴IOLMaster略长于A超,<22mm组有显著性差异,在眼轴>26mm和22～26mm之间组没有显著性差异。但三组之间均具有较好的相关性。前房深度IOLMaster与A超三组均未见差异性,且具有一定相关性。研究还发现眼轴IOLMaster略长于A超时,可见到前房深度有时IOLMaster略长于A超,有时A超略长于IOLMaster。

AIM：To explore the difference and correlation between different axial length and Anterior Chamber Depth（ACD） by means of IOLMaster and A ultrasound in the clinical cataract patients.METHODS：Cataract patients were collected for 8 months and examined respectively preoperatively by IOLMaster and A ultrasound.The results of both examinations were checked.Every patients were examined by the same skilled doctor.The axial length and ACD were examined by IOLMaster in first step,and then by A ultrasound in second step.RESULTS：There was some significant difference in the axial length 22mm,and no difference in the axial length 26mm and between 22mm and 26mm.A ultrasound and IOLMaster axial length relationship were 0.998,0.991 and 0.783.The correlationship about their ACD were 0.851,0.628,0.673.CONCLUSION：It was found that the IOLMaster＇s axial length was longer than A ultrasound.There have good relationship among three groups about their axial length and A ultrasound,though there are some difference.