Jones R L, Kratz R P
Department of Ophthalmology, University of California, Irvine.
J Cataract Refract Surg. 1990 Jan;16(1):115-9. doi: 10.1016/s0886-3350(13)80885-1.
We evaluated 589 eyes using the IntraOptics opacity lensmeter 701. Twenty-one eyes contained poly(methyl methacrylate) intraocular lenses. The patients in the phakic group (578 eyes), who had no ocular pathology other than refractive error or cataracts, averaged 60.3 years of age, had an average visual acuity of 20/30, and displayed an average lens density as measured with the opacity lensmeter of 22.09. The data were analyzed for the effect of age upon density using various regression models. The best fit was obtained with an exponential model: Density = 6.2 x e(0.02 x Age), with a correlation coefficient of 0.759. The average density for the pseudophakic group (mean age = 68.5) was 9.23. Neither cortical nor posterior subcapsular cataracts were well recorded. Our results indicate that the IntraOptics opacity lensmeter is a rapid and accurate instrument for documenting nuclear cataract changes. The opacity lensmeter may prove useful not only as a clinical tool for monitoring cataract progression but also as an "electronic" second opinion.
我们使用IntraOptics不透明度晶状体计701对589只眼睛进行了评估。其中21只眼睛植入了聚甲基丙烯酸甲酯人工晶状体。有晶状体眼组（578只眼睛）的患者除屈光不正或白内障外无其他眼部病变，平均年龄为60.3岁，平均视力为20/30，使用不透明度晶状体计测量的晶状体平均密度为22.09。使用各种回归模型分析了年龄对密度的影响。指数模型的拟合效果最佳：密度=6.2×e(0.02×年龄)，相关系数为0.759。无晶状体眼组的平均密度（平均年龄=68.5）为9.23。皮质性和后囊下白内障均记录不佳。我们的结果表明，IntraOptics不透明度晶状体计是记录核性白内障变化的一种快速且准确的仪器。该不透明度晶状体计不仅可能被证明是监测白内障进展的临床工具，还可能成为一种“电子”第二意见。
