摘要
目的:比较CarlZeiss IOL-Master与传统生物测量方法在测量无晶状体眼患儿眼轴长度的准确性。方法:术前分别应用传统超声生物测量方法,自动电脑验光仪及IOL-Master测量眼轴长度及角膜曲率。按超声方法测量结果计算植入人工晶状体的屈光度。利用IOL-Master测量结果计算其预测屈光误差。术后1mo检查患者的屈光状态。结果:当眼轴≤26mm时,IOL-Master测得的眼轴均值为(23.28±0.63)mm,接触式A超测量的眼轴均值为(23.24±0.64)mm,两者之间比较差异无显著性意义。当眼轴>26mm时,IOL-Master测得的眼轴均值为(26.48±0.35)mm,接触式A超测量的眼轴均值为(26.68±0.38)mm,两者之间比较差异有显著性意义(P<0.01)。IOL-Master测得的角膜曲率为(44.42±1.18)D,自动验光仪测得的角膜曲率为(44.40±1.25)D,两者之间比较差异无显著性意义。当眼轴≤26mm时,术后实际屈光度为(-0.28±0.36)D,IOL-Master组预计术后屈光度为(-0.39±0.53)D,传统生物测量方法组预计术后屈光度(-0.25±0.15)D,各组之间比较差异无显著性意义。当眼轴>26mm时,术后实际屈光度为(0.38±0.18)D,IOL-Master组预计术后屈光度为(0.43±0.24)D,传统生物测量方法组预计术后屈光度为(-0.05±0.07)D,实际屈光度与IOL-Master预计术后屈光度两者之间比较差异无显著性意义,实际屈光度与传统生物测量方法组的预计术后屈光度两者之间比较差异有显著性意义(P<0.01)。结论:无晶状体眼患儿进行眼轴测量时,IOL-Master有非接触、高准确、操作简便等优点,另外对无晶状体眼的高度近视患儿IOL-Master测量的准确性高,在一些特殊情况仍需依赖于传统接触式A超测量。
AIM ： To study the axial length outcome obtained by IOL Master biometry and ultrasonography data in a prospective study of 46 aphakic eyes that underwent intraocular lens implantation. METHODS： The SRK-Ⅱ and SRK-T formulas using applanation ultrasonography data were employed for the prediction of implanted intraocular lenses （IOLs）. One month after cataract surgery the refractive outcome was determined. Preoperative IOL-Master data were used retrospectively to calculate the IOL prediction error. The two different biometry methods are compared. RESULTS： 46 patients, 5. 6 years of age in average, underwent IOL implantation. When the axial length ≤26 mm , there was no significant difference in axial length between IOL-Master and ultrasonic biometry. The mean postoperative spherical equivalent was （-0.28 ± 0.36） D. The predicted postoperative spherical equivalent of the IOL-Master biometry and ultrasonography is （-0. 39 ± 0.53） D and （-0.25 ± 0.15） D respectively. There were no statistically significant differences among them. When the axial length 〉 26mm, the optical axial length obtained by the ultrasound was significantly longer （ P 〈 0.01 ） than the axial length by IOL-Master, is （26.68 ±0.38）mm vs （26.48 ± 0.35） mm. The mean postoperative spherical equivalent was （0.38 ± 0.18） D. Applanation ultrasonography after optimization of the surgeon factor yielded a greater prediction error than the optimized IOL-Master biometry, （-0.05 ± 0.07）D vs （0.43 ±0.24）D. CONCLUSION： IOL-Master as one of methods to measure axial length of children＇s aphakic eyes has advantage in non-contact, high accuracy and easy performance, and especially has a high accuracy in the myopic eye measurement. But sometimes for some special cases it also needs to use the traditional contact method.
出处
《国际眼科杂志》
CAS
2008年第12期2474-2476,共3页
International Eye Science
