Davidoff E, Duggan J
Arch Ophthalmol. 1982 Mar;100(3):443-4. doi: 10.1001/archopht.1982.01030030445012.
A computer program has been developed that allows a refractionist to determine the dioptric difference between the powers of two spherocylinder lenses with an inexpensive programmable calculator. The lens system that has been thus calculated may be placed in front of the patient's present spectacles. This allows rapid comparison between the results of the refractive examination and the patient's present spectacles. In difficult cases, this procedure is a useful adjunct in making a decision as to whether the refractive prescription should be changed.
已经开发出一种计算机程序，它能让验光师用一台价格低廉的可编程计算器确定两个球柱面透镜的焦度之差。如此算出的透镜系统可置于患者当前所戴眼镜之前。这能快速比较验光检查结果与患者当前所戴眼镜。在疑难病例中，该程序对于决定是否应更改验光处方是一种有用的辅助手段。
