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本文对４８例６５眼拟植入Ａ常数１１８．５人工晶体的白内障患者，采用《人工晶体屈光度换算表》查表法和美国Ｓｏｎｏｍｅｄ公司Ａ－４０００型超声测量仪计算机程序计算法，进行了人工晶体屈光度计算的对照研究。结果：查表法计算的人工晶体屈光度平均值为２１．７２±３．６１Ｄ。计算机程序计算法计算的人工晶体屈光度平均为２１．２６±３．３９Ｄ，两种方法计算结果差异无统计学意义（Ｐ＞０．０５）。由于《人工晶体屈光度换算表》采用测量角膜直径换算角膜屈光度，人工晶体屈光度（Ｐ）值是根据ＳＲＫⅡ公式计算、全部数据经微机处理，因此在没有角膜计、没有计算机程序计算系统的条件下，用《人工晶体屈光度换算表》计算人工晶体屈光度是可行的。
In this paper, 48 cases of 65 eyes to be implanted A constant 118.5 intraocular lens in patients with cataract, using “intraocular lens refractive power conversion table” look-up table and the United States Sonomed A-4000 ultrasonic measuring instrument computer program method, the artificial Controlled study of the calculation of the refractive power of crystals. Results: The average intraocular lens refractive power calculated by look-up table method was 21.72 ± 3.61D. The average of intraocular lens refraction computed by computer program was 21.26 ± 3.39D, there was no significant difference between the two methods (P> 0.05). As the “intraocular lens refractive power conversion table” used to measure corneal diameter converted corneal refractive power, intraocular lens diopter (P) value is calculated according to SRK Ⅱ formula, all the data processed by the microcomputer, so in the absence of a corneal count, without the computer program computing system conditions, It is feasible to calculate the refractive power of intraocular lens by “IOL conversion table”.