干涉条纹视力计预测白内障术后视力的准确性分析  

Accuracy of interferometer for predicting visual acuity behind cataract

作　　者：陈峰[1] 施明光[1] 韩真真[1] 郑海华[1] 苏小夏[1] 

机构地区：[1]温州医学院附属第二医院眼科,320027

出　　处：《临床眼科杂志》2005年第6期496-499,共4页Journal of Clinical Ophthalmology

摘　　要：目的研究干涉条纹视力计预测白内障患者术后视力的准确性及各种影响因素。方法 69只白内障眼在手术前用Heine视网膜视力计进行干涉条纹视力的检查。干涉条纹视力与术后最佳矫正视力进行比较,得出预测准确率、假阳性率和假阴性率。分析了白内障浑浊程度、白内障合并其他病变、术前最佳矫正视力、预测视力大小等因素对Heine视网膜视力计预测准确性的影响。结果 Heine视网膜视力计对白内障患者预测准确率为45.3％,假阳性率3.1％,假阴性率51.6％。预测视力比术后最佳矫正视力平均低3.75行对数视力表视力,预测视力与术后最佳矫正视力相关性较差(相关系数r=0.411)。白内障术前最佳矫正视力≥4.0组预测准确率为60.7％,最佳矫正视力＜4.0组为33.3％,差异有显著性意义(P=0.029)。预测视力≥4.7组预测准确率89.5％,而预测视力＜4.7组预测准确率为26.7％,差异有显著性意义(P＜0.001)。结论 Heine视网膜视力计不能准确预测白内障患者的术后视力,它往往较大程度地低估术后视力。Heine视网膜视力计预测准确性受白内障浑浊程度和术前最佳矫正视力的影响。Objective To assess the accuracy of the interferometer for predicting visual acuity behind cataract and to detect some influencing factors. Methods A total of 69 eyes were assessed by Heine retinometer （HR） before cataract surgery. The interferometric visual acuity was compared with the postoperative best corrected visual acuity （BCVA） and the accuracy ,the false -negative rate and the false - positive rate of the HR were figured out. The effect of the severity of the cataract, the concurrent disease,the preoperative BCVA and the predicted vision on the predicting ability were analysised. Results The accuracy of the HR for predicting visual acuity behind cataract was 45.3% ,and the false - negative rate 51. 6%, the false - positive rate 3.1%. The predicted visual acuity was inaccurate by an average of 3.75 lines lower to the logarithm visual acuity. There was a poor correlation between predicted visual acuity and postoperative visual acuity （ r = 0. 403）. In the group where the preoperative BCVA ≥4.0, the accuracy was 60.7 %, while BCVA 〈 4.0 only 33.3% （ P = 0. 029）. There was statistically significant disparity between the accuracy in the predicted visual acuity ≥0.5 group and in the predicted visual acuity 〈0.5 group （ P 〈0. 001 ）o Conclusion HR was not accurate in predicting the visual acuity behind cataract. It tended to underestimate the potential vision. The accuracy of HR was affected by the severity of the cataract and the preoperative BCVA.

关 键 词：干涉条纹视力 白内障 视网膜视力计 

分 类 号：R779.66[医药卫生—眼科]