Bailey N J
College of Optometry, Ohio State University.
J Am Optom Assoc. 1975 Nov;46(11):1177-8.
Measuring procedures used for hydrogel contact lenses are sufficiently difficult to make identification of a given soft lens annoyingly time-consuming and sometimes impossible. Etching a number or letter on the lens when it is received from the laboratory allows the practitioner to tell whether the proper lens is being worn, even while the lens is still on the patient's eye. A sharp pointed tool on a dry hydrogel lens produces this identifying number.
用于水凝胶隐形眼镜的测量程序非常困难，以至于识别给定的软性隐形眼镜既耗时又令人烦恼，有时甚至无法识别。从实验室收到隐形眼镜时，在镜片上蚀刻一个数字或字母，即使镜片仍在患者眼睛上，从业者也能判断是否佩戴了合适的镜片。在干燥的水凝胶镜片上使用尖锐的工具就能产生这个识别数字。
