Dowaliby M, Nichols E, Bailey M E
Am J Optom Physiol Opt. 1980 Feb;57(2):109-12. doi: 10.1097/00006324-198002000-00006.
It has been noted clinically that hard resin lenses mounted in rimmed frames exhibited bitoricity. The manufacturers of optyl plastic frames claim that the molecular structure of optyl eliminates the bitoric effect. This study involves "clocking" hard resin lenses mounted in frames fashioned of optyl, zylonite plastic, and metal mountings to test this hypothesis. The results are important because of the increasing use of optical CR 39 plastic in the fabrication of eyewear.
临床上已经注意到，安装在有框镜架中的硬质树脂镜片呈现双曲率。奥普蒂塑料镜架的制造商声称，奥普蒂的分子结构消除了双曲率效应。本研究涉及对安装在由奥普蒂、赛璐珞塑料和金属镜架制成的镜架中的硬质树脂镜片进行“计时”，以检验这一假设。由于光学CR 39塑料在眼镜制造中的使用日益增加，这些结果具有重要意义。
