干涉条纹视力测定在高度近视者白内障术前检查的应用  

The usage of interference fringe visual acuity for examination of pre-operation of high myopia with cataract

作　　者：李会芳[1] 白洁[1] 谢芳[1] 张璐[1] 林宏彬[1] 刘平[1] 

机构地区：[1]哈尔滨医科大学附属第一医院眼科医院,黑龙江省哈尔滨市150001

出　　处：《眼科》2011年第2期98-100,共3页Ophthalmology in China

摘　　要：目的评价激光干涉条纹视力(IVA)检测在预测高度近视者白内障术后潜在视力的可靠性及应用价值。设计前瞻性病例系列。研究对象49例(71眼)高度近视白内障患者(眼轴长度≥26.00 mm)。方法所有患者术前进行IVA检测,按LOCSII标准依晶状体核硬度将患者分为,甲组(60眼):晶状体核I～III级,乙组(10眼):晶状体核IV级,丙组(1眼):晶状体核V级;根据术前IVA值分为,A组(51眼):IVA≥0.4,B组(20眼):IVA<0.4。检测结果与患者术后1个月最佳矫正视力(BCVA)进行相关分析及检验,评价IVA检测在预测高度近视者白内障术后潜在视力的应用价值。主要指标IVA值、晶状体混浊程度及术后最佳矫正视力。结果 IVA预测高度近视者白内障术后视力相符率达71.8%;晶状体核硬度IV级及以下者(n=70)术前IVA值与术后BCVA呈显著相关性(r=0.677,P=0.000);IVA≥0.4者与术后BCVA的差异显著低于IVA<0.4者与术后BCVA的差异(χ2=9.906,P=0.002)。结论 IVA能比较准确地反映高度近视白内障患者潜在视功能,特别是对于晶状体核硬度IV级及以下、术前IVA≥0.4者。Objective To assess the reliability and value of interference fringe visual acuity （IVA） in predicting potential visual acuity after cataract surgery in cataract patients with high myopia. Design Prospective case series. Participants 71 eyes of 49 cataract patients （the axial ≥ 26.00 mm） with high myopia. Methods We measured the IVA in all patients before cataract surgery. Lens opacity was divided into grade I-V according to LOCSII standard, Group 1（60 eyes）： lens opacity grade I-III , Group 2（ 10 eyes）： lens opacity grade IV , Group 3（ 1 eye）： lens opacity grade V. According to preoperative IVA, patients were divided into group A（IVA≥0.4） and group B （IVA〈0.4）. The best corrected visual acuity （BCVA） was compared with IVA, and correlation analysis and chi-square test were used for statistical analysis. Main Outcome Measures IVA, lens opacity and BCVA. Result The accuracy of the IVA for predicting BCVA after cataract surgery was 71.8%. The IVA was significantly correlated with postoperative BCVA in patients with lens nuclear hardness of grade IV or below （r=0.677, P=0.000）. The IVA and post-operative BCVA of group B （IVA〈0.4） was significantly different from group A （IVA ≥ 0.4） （x2=9.906,P=0.002）. Conclusion The IVA can accurately predict the post-operative BCVA in cataract patients with high myopia, especially in those with lens nuclear hardness of grade IV and below and IVA more than 0.4.

关 键 词：激光干涉条纹视力 高度近视 白内障 最佳矫正视力 

分 类 号：R779.66[医药卫生—眼科]