Opacity Lensmeter和Pentacam测量的晶状体密度与视力的相关性研究

目的　探讨Opacity Lensmeter（OLM）和Pentacam测量的晶状体密度值以及视力与其之间的相关性。方法　收集年龄相关核性白内障患者81例（81眼），检查最佳矫正视力（best corrected visual acuity,BCVA）（logMAR）后，分别用OLM和Pentacam测量晶状体密度，分析OLM和Pentacam测量的晶状体密度值及BCVA与其之间的相关性。结果　OLM和Pentacam测量的晶状体密度值与BCVA（logMAR）均呈正相关关系，且Pentacam测量的晶状体密度值与BCVA（logMAR）相关性更高（Z=2.068，P<0.05）。结论　晶状体密度可以反映晶状体混浊程度及视力损害程度。Pentacam比OLM测量的晶状体密度值与BCVA损害程度的相关性更高。

Correlation analysis between lens density and visual acuity by Opacity Lensmeter and Pentacam

Objective　To investigate the relationship between lens density (LD) measured with Opacity Lensmeter (OLM) and Pentacam as well as that between LD and visual acuity in age-related nuclear cataract patients.Methods　Eighty-one patients(81 eyes) with age-related nuclear cataract were enrolled.The logMAR best corrected visual acuity (BCVA) was recorded.LD was evaluated by OLM and Pentacam.The relationship between LD measured with OLM and Pentacam as well as that between LD and logMAR BCVA were analyzed.Results　There were a linear increasing relationship between logMAR BCVA and LD by OLM and Pentacam,respectively.The correlation between Pentacam and logMAR BCVA was stronger than that between OLM and logMAR BCVA (Z=2.068,P<0.05).Conclusion　LD can be used for assessing visual damage in age-related nuclear cataract.A stronger correlation was observed between LD by Pentacam and logMAR BCVA than OLM.