一、硬性角膜接触镜的历史发展角膜接触镜是一种很精密的眼科工具 ,用来提高视力、改善视觉质量已有 2 0 0年历史 ,根据接触镜材质及受压后有无抵抗、能否产生弯曲分为硬性角膜接触镜和软性角膜接触镜。硬镜的材质最初为玻璃 ,由于加工困难、比重大、易破碎的缺点 ,在 2 0世纪? First, the history of the development of hard contact lenses Contact lens is a very precise ophthalmic tools used to improve vision, improve visual quality has been 200 years of history, according to the contact lens material and whether the pressure after the resisting, can No bending is divided into hard contact lenses and soft contact lenses. Hard materials for the first glass as a mirror, due to processing difficulties, the proportion of large, easy to break the shortcomings in the 20th century?