摘要
目的评价IOLMaster与四种人工晶状体屈光度计算公式(SRKⅡ、SRK/T、Hol-laday1、Haigis)的准确性,为其临床应用提供依据。方法选取顺利施行白内障超声乳化摘出联合后房型人工晶状体植入手术的患者100例(100眼)(AL≥22.0mm),应用IOL-Master测量眼前节相关参数(B组),同时应用接触式A型超声、电脑验光仪测量作为对照(A组)。术后2周测量实际屈光度。根据植入的人工晶状体度数分别应用机器自带的四种人工晶状体屈光度计算公式计算术眼的平均绝对屈光误差(mean absoluate error,MAE)。结果 B组测量的眼轴长度(axial length,AL)、前房深度值分别为(24.17±1.73)mm、(2.94±0.49)mm,高于A组(23.61±1.83)mm、(2.69±0.51)mm(均为P<0.05),而角膜曲率测量差异无统计学意义(P>0.05)。不同AL下,两组通过四个人工晶状体屈光度计算公式所得的MAE差异均无统计学意义(均为P>0.05)。22.0≤AL<26.0mm患眼中四种计算公式所得MAE差异无统计学意义(均为P>0.05),而AL≥26mm患眼中应用Haigis人工晶状体屈光度计算公式所得MAE:A组为(0.80±0.50)D,B组为(0.71±0.65)D,小于SRKⅡ公式计算所得MAE:A组为(1.29±0.89)D,B组为(1.28±0.92)D氉(P<0.05)。结论 IOLMaster前节生物测量与传统接触式A型超声、电脑验光仪测量通过四种计算公式预测人工晶状体度数具有相同的准确性;22.0≤AL<26.0mm患者SRKⅡ、SRK/T、Holladay1、Haigis公式具有相同的准确性;AL≥26.0mm患者Haigis公式准确性优于SRKⅡ公式。
Objective To evaluate the accuracy and clinical application significance of IOLMaster biometry and four IOL formulas （ SRK Ⅱ,SRK /T,Holladay 1 and Haigis） to provide the clinical basis.Methods This study included 100 cases （ 100 eyes,axial length≥ 22.0 mm） with cataract which had received smooth phacoemulsification and posterior chamber IOL implantation.Preoperative measurements of anterior segment parameters were obtained with IOL Master （ group B） ,as well as with contacting type A ultrasound and automatic keratometry （ group A ） .Postoperative measurement was obtained with automatic keratometry at two weeks after treatment.The power of implanted IOL was used to calculate the mean absolute error （ MAE） of the objective eyes with four various formulas （ SRK /T,SRK II,Holladay 1 and Haigis） .Results The axial length and axial chamber depth in group B were（ 24.17±1.73） mm and （ 2.94±0.49） mm,which were higher than those of group A [（ 23.61±1.83） mm and （ 2.69±0.51） mm]（ P 0.05） ,while the keratometric index between two groups showed no significantly difference（ P 0.05） .Given different axis length, MAE calculated with the four IOL formulas showed no significant difference（ all P 0.05） .In eyes （ 22.0≤ axis length 26.0 mm） MAE calculated with the four IOL formulas showed no significant difference（ all P 0.05 ） .In eyes（ axis length ≥26.0 mm） MAE calculated by Haigis formula were （ 0.80±0.50） D in group A and （ 0.71±0.65） D in group B,which were smaller than that of SRK Ⅱ formula [Group A： （ 1.29±0.89） D; Group B： （ 1.28±0.92） D]（ P 0.05） .Conclusion IOLMaster anterior segment biometry and traditional contacting type A ultrasound and automatic keratometry share an identical accuracy when measuring the power of implanted IOL.The accuracy of Haigis formula is higher than that of SRK Ⅱ formulas in eyes with axis length ≥ 26.0 mm.
出处
《眼科新进展》
CAS
北大核心
2013年第2期143-146,共4页
Recent Advances in Ophthalmology
基金
国家自然科学基金资助项目(编号:81170836)
辽宁省教育厅重点实验室基金资助项目(编号:LS2010177)
辽宁省自然科学基金资助项目(编号:201202260)~~
