Pentacam对白内障患者前房参数测量的研究

Research on measurement of anterior chamber parameters by Pentacam in cataract patients

目的探讨Pentacam与UBM测量年龄相关性核性白内障患者前房深度（anterior chamber depth，ACD）、前房角度（anterior chamber angle，ACA）的差异以及其与A型超声测量ACD的差异与晶状体密度的相关性。方法分别采用Pentacam、UBM测量52例（52眼）年龄相关性核性白内障患者ACD、ACA；Pentacam和A超分别测量患者散瞳后的ACD。结果Pentacam测量的ACD值为（2．63±0．39）mm，UBM测量值为（2．63±0．34）mm，差异无统计学意义（P=0．595，r=0．969）；Pentacam测量的ACA为（31．27±5．46）°，UBM测量值为（30．89±5．37）°，差异无统计学意义（P=0．218），Pentacam与UBM测量ACD及平均ACA结果之间均具有显著的相关性（r分别为0．969、0．759）；散瞳后，Pentacam测量ACD为（2．59±0．21）mm，A超测量值为（2．79±0．58）mm，二者的差异具有统计学意义（P〈0．05），且与晶状体密度具有一定的相关性（r=0．186，P〈0．05）。在晶状体密度分别为0～20、20～40和40以上时，Pentaeam与A超测量ACD结果差异与晶状体密度相关性分别为0．079、0．264和0．288（均为P〈0．05）．结论Pentacam可作为测量年龄相关性核性白内障患者的ACD、平均ACA的良好选择，在临床工作中应灵活运用、综合分析。

Objective To investigate the differences in anterior chamber depth （ACD） and anterior chamber angle （ACA） measured by Pentacam and UBM, their differences with ACD by A-scan and correlation with lens density in age-related nuclear cataract. Methods ACD and ACA were measured in 52 cases （52 eyes） with age-related nuclear cataract by Pentacam and UBM, respectively. Pentacam and A-scan were used to measure ACD after mydriasis in patients. Results ACD values were （2.63 ± 0.39 ） mm by Pentacam and （2.63 ± 0.34 ） nun by UBM, there was no statistical difference （P=0.595,r=0.969）;ACA values were （31.27 ±5.46）° by Pentacam and （30.89 ± 5.37）° by UBM,there was no difference （P =0.218）. Significant correlations were found in ACD and average ACA by Pentacam and UBM（ r = 0. 969, r = 0.759 ）. After mydriasis, ACD values were （2.59 ±0. 21 ）mm by Pentacam and （2.79 ±0. 58） mm by A-scan, there was statistical difference （ P 〈 0.05 ）, and had correlation with lens density （ r = 0. 186 ,P 〈0.05 ）. When the lens density were less than 20 ,from 20 to 40 and more than 40, the correlations for difference of ACD between Pentacam and A-scan and lens density was 0. 079,0. 264 and 0.288 （ all P 〈 0.05 ）. Conclusions Pentacam can be a good choice for measuring ACD and average ACA in patients with age-related nuclear cataract, and it should be used flexibly and analyzed synthetically in clinical works.