概述接触镜研制的历史已有100余年,当初由于工业基础以及物质条件等限制,只能应用玻璃吹制,由于镜片厚而重,玻璃易破碎,对眼有一定危险,制作技术复杂,而价格昂贵,在临床使用上受到了一定的限制。1930年后期,发现了甲基丙烯酸甲酯(Polymethyl methaczylate-PMMA)后,很快应用到医药及光学工业上,并开始制成一种角巩膜接触镜—硬镜(Hard lens)。1947Kevin Tuohy用甲基丙烯酸甲酯,作成薄而轻,光学性能好的角膜接触镜,目前已发展成为直径7—8mm,厚0.1mm的小薄镜片,使接触镜有了飞跃的发展。一般认为硬接触镜能克服普通眼镜带来的一些缺点,如(1)戴眼镜后睑型的变化;(2)视野变窄,主要无晶体眼配戴高度凸镜片后,视野中有10°的环形暗点;(3)镜片哈气;(4)鼻梁及耳后压迫感,偶可发生过敏性皮炎;(5)物象有大小变化的感觉,如近视镜变小,远视镜变大。但硬接触镜也有缺点,戴用初期机械刺激性 Over the past 100 years history of contact lens research, initially due to industrial base and material constraints, the only application of glass blowing, due to the lens thick and heavy, easy to break the glass, the eye is a certain danger, the production of complex technology, and the price Expensive, subject to certain restrictions in clinical use. After the discovery of Polymethyl methaczylate-PMMA in the late 1930s, it was quickly applied to the pharmaceutical and optical industries and began to be made into a lens for the contact lens, the hard lens. 1947Kevin Tuohy Methyl methacrylate, made of thin and light, good optical properties of contact lenses, has now developed into a diameter of 7-8mm, 0.1mm thick small lenses, the contact lens has made leaps and bounds. Generally considered hard contact lenses to overcome some of the shortcomings brought by ordinary glasses, such as (1) changes in the type of eyelid wearing glasses; (2) narrowing of the field, the main aphakia wearing high degree of convex lens, the field of view of 10 ° (4) the nose and ears pressure, and even can occur atopic dermatitis; (5) the phenomenon of changes in the size of the object, such as myopia smaller, hyperopia larger. However, hard contact lenses also have shortcomings, wearing initial mechanical irritation