A、B超声交替测量眼轴用于人工晶体度数计算  

Axial Eye Length Measurement with Alternative A/B Scan for IOL Power Calculation

作　　者：顾真寰[1] 沈慧英[1] 盛敏杰[1] 

机构地区：[1]同济大学医学院附属铁路局中心医院眼科,上海市200072

出　　处：《中国超声医学杂志》2001年第6期451-452,共2页Chinese Journal of Ultrasound in Medicine

摘　　要：目的 :探索并发性白内障玻璃体混浊时准确测量眼轴的新方法。方法 :用 A超测量角膜到晶体后囊的距离 ,利用 B超直观性测量晶体后囊到视网膜的距离 ,两者相加得出眼轴长度用于人工晶体计算 ,可避免将玻璃体混浊误认为眼后壁。结果 :与常规 A超测量法相比 ,术后残余屈光在 1D以上的比例减少 12 %。结论 :本测量法设计合理 ,准确性高 。Objective:To explore a new means for axial eye length measurements when vitreous turbidity in intercurrent cataract.Methods:The distance between the cornea and the posterior capsule of lans was measured with A scan,and the distance between the posterior capsule and the retina by B scan using its intuitionistic quality.The eye length can be got by adding the numbers of A and B scan for IOL power calculation to avoid the mistake of vitreous turbidity as the eye backwall.Results:As compared with routine A scan measurement,the residual refraction error more than 1 dioptre after operation was reduced 12%.Conclusions:The new method is reasonable,accurate and practable.

关 键 词：超声波测量 眼轴 并发性白内障 A超 B超 人工晶体度数计算 

分 类 号：R445.1[医药卫生—影像医学与核医学]