IOL-MASTER测量人工晶体屈光度的精确性研究  

Accuracy of IOL-Master for Power Calculation of Artificial Intraocular Lens

作　　者：刘平[1] 石广森[1] 

机构地区：[1]哈尔滨医科大学附属第一医院眼科医院,哈尔滨150001

出　　处：《中国实用眼科杂志》2006年第8期786-788,共3页Chinese Journal of Practical Ophthalmology

基　　金：黑龙江省科委基金资助(L0108)

摘　　要：目的比较IOL-Master与传统方法测量人工晶体度数的准确性,以了解其特点及应用价值。方法分析2005年1月～6月间于我院行白内障超声乳化摘除及人工晶状体植入术的年龄相关性白内障167人213眼,术前分别用IOL-Master、传统的超声生物测量仪和角膜曲率计测量眼轴长度和角膜曲率,使用SRK-II或SRK/T公式计算植入人工晶体的度数。术后3m检查患者屈光状态。结果用IOL-Master和超声生物测量仪检测眼轴长度:L>26mm组分别为21.47±0.58mm和21.60±0.64mm,两者对比有显著性差异(P<0.05),L≤26mm各组,两者对比无显著性差异(P>0.05);IOL-Master和角膜曲率计检测量角膜曲率分别为44.27±1.72D和43.92±1.53D,两者对比无显著性差异(P>0.05);术后3m,两种方法的绝对屈光误差比较:L>26mm组分别为0.885±0.683D和1.459±0.724D,两者对比有显著性差异(P<0.05),L≤26mm各组,两者对比无显著性差异(P>0.05)。结论应用IOL-Master测量人工晶状体度数,具有准确性、非接触性、操作简便、安全而且病人易于接受的特点,但也有一定局限性,不能完全替代A超。Objective To evaluate the clinical application and characteristics of IOL-Master by comparing with traditional ultrasound biometry in their accuracy. Methods Data was analyzed from 167 patients （213 eyes） with age-related cataracts who underwent phacoemulsification and lens implantation in our hospital from Jan. 2005 to jun. 2005. The length of ocular axis and keratometric power were measured preoperatively by IOL-Master, ultrasonic biometry and auto-keratometer. Artificial IOL power was calculated according to the SRK-II or SRK/T formula. Their refraction outcome were fellow-up 3 month after operation. Results In measurement of ocular axial length between IOL-Master and ultrasonic biometry： There was no significant difference in axial length ≤ 26mm and distinct discrepancy in axial length ≤ 26mm which was 29.43 ± 1.03 mm by IOL Master and 28.97 ± 0.59mm by traditional ultrasound biometry; The keratometric powers measured by IOL-Master and keratometry were 44.27 ± 1.72D and 43.92 ± 1.53D, showing no significant discrepancy. The mean absolute refractive error, one month after operation, in IOL Master group and traditional ultrasound biometry groups： There was no significant difference in axial length ≤ 26mm and distinct discrepancy in axial length ≤ 26mm which was 0.885 ± 0.683D by IOL Master and 1.459 ± 0.724D by traditional ultrasound biometry. Conclusion IOL-Master is an accurate, non-contact, safe and reliable tool for calculating the power of artificial IOLs, however, IOL-Master can＇t take the place of A-scan because of some limitations.

关 键 词：IOL—Master A超 人工晶体 

分 类 号：R473.77[医药卫生—护理学] R318.6[医药卫生—临床医学]