为了迅速方便地计算出人工晶体的折射力,许多方法巳相继出现。其中有:图表法、查表法、计算盘、计算器和计算机程序。虽然只有计算器和计算机程序才能得出数学上精确的结果,但在临床上,这种精确度没有多大的必要,因为现用的一些测量方法(如眼超声波测量,X光测量和角膜曲率计测量)所给的眼轴长度、前房深度、晶体厚度和角膜曲率等测量值,并非如此精确。我们设计的人工晶体折射力计算尺,操作方便 In order to quickly and easily calculate the refractive power of intraocular lenses, many methods have been followed. Among them: chart method, look-up table method, calculation plate, calculator and computer program. Although only calculators and computer programs can produce mathematical accurate results, this accuracy is not clinically necessary, as some of the currently used measurement methods such as ocular ultrasound, x-ray and corneal Measurements) are not accurate enough to give measurements such as axial length, anterior chamber depth, lens thickness, and corneal curvature. We designed artificial lens refractive power slide rule, easy to operate