眼轴长度和角膜曲率测量误差对儿童患者人工晶状体植入屈光度预测公式的影响。
Effect of axial length and keratometry measurement error on intraocular lens implant power prediction formulas in pediatric patients.
作者信息
Eibschitz-Tsimhoni Maya, Tsimhoni Omer, Archer Steven M, Del Monte Monte A
机构信息
Department of Ophthalmology and Visual Sciences, Kellogg Eye Center, University of Michigan, Ann Arbor, Michigan, USA.
出版信息
J AAPOS. 2008 Apr;12(2):173-6. doi: 10.1016/j.jaapos.2007.10.012.
PURPOSE
To examine the relationship between axial length and keratometry measurement errors and intraocular lens (IOL) power calculations for pediatric eyes.
METHODS
The sensitivity of IOL power calculation to errors in axial length and keratometry measurements was computed as a function of axial length and keratometry for the SRK II, Hoffer Q, Holladay I, SRK/T, and Haigis formulas.
RESULTS
The sensitivity of the IOL power calculation to an axial length measurement error is increased at 4 to 14 D/mm error in axial length in children compared with 3 to 4 D/mm error in axial length in adults. The error in calculation is 0.8 to 1.3 D/D error in keratometry measurement for both children and adults.
CONCLUSIONS
Axial length measurement errors in pediatric eyes may lead to large errors in IOL power calculations.
目的
研究儿童眼轴长度与角膜曲率测量误差以及人工晶状体（IOL）屈光力计算之间的关系。
方法
针对SRK II、Hoffer Q、Holladay I、SRK/T和Haigis公式，计算IOL屈光力计算对眼轴长度和角膜曲率测量误差的敏感度，该敏感度是眼轴长度和角膜曲率的函数。
结果
与成人眼轴长度测量误差为3至4 D/mm相比，儿童眼轴长度测量误差为4至14 D/mm时，IOL屈光力计算对眼轴长度测量误差的敏感度增加。儿童和成人角膜曲率测量误差的计算误差均为0.8至1.3 D/D。
结论
儿童眼轴长度测量误差可能导致IOL屈光力计算出现较大误差。
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