Arffa R C, Donzis P B, Morgan K S, Zhou Y J
Department of Ophthalmology, University of Pittsburgh, Pennsylvania.
Ophthalmic Surg. 1987 Aug;18(8):581-4.
Formulas created to predict the optical requirements of the aphakic eye have been tested mainly in adult eyes. The accuracy of these formulas in shorter pediatric aphakic eyes was examined using retrospective analysis of 17 aphakic pediatric patients. The Sanders-Retzlaff-Kraff contact lens formula, used previously to predict required lens powers for epikeratophakia, consistently underestimated the required aphakic correction in the shorter eyes, which may have been responsible in part for the large undercorrections obtained previously in patients under one year of age. The Hoffer-Colenbrander and Binkhorst theoretical formulas, Donzis-Kastl-Gordon percentage change formula, and a linear regression formula derived from the present data (LIN), were significantly more accurate. The differences between these formulas were not significant. The use of one of these formulas should facilitate prediction of required epikeratophakia lenticule power or intraocular lens power in young children.
用于预测无晶状体眼光学需求的公式主要在成人眼中进行了测试。通过对17例无晶状体儿童患者的回顾性分析，检验了这些公式在较短的儿童无晶状体眼中的准确性。先前用于预测角膜表层镜片术所需镜片屈光度的桑德斯-雷茨拉夫-克拉夫隐形眼镜公式，始终低估了较短眼睛中所需的无晶状体矫正度数，这可能是先前一岁以下患者出现大量矫正不足的部分原因。霍弗-科伦布兰德和宾克霍斯特理论公式、唐齐斯-卡斯尔-戈登百分比变化公式以及从当前数据得出的线性回归公式（LIN）则明显更准确。这些公式之间的差异不显著。使用这些公式中的一种应有助于预测幼儿所需的角膜表层镜片术晶状体屈光力或人工晶状体屈光力。
