摘要
圆锥角膜导致严重的角膜不规则散光,硬性透气性角膜接触镜(rigid gas-permeable contact lens,RGPCL,RGP)的验配较为困难。根据角膜形状选择个性化的镜片设计,大多数患者能获得满意的镜片配适。以角膜地形图为基础的RGP验配软件程序可以提高RGP验配效率。三维(3D)打印技术可准确地构建角膜前表面固体模型,利用这种技术可直观地观察镜片定位在角膜前表面的情况,更准确快速地选择镜片。
The main reason of decreased visual acuity after keratoconus is most likely high irregular astigmatism.A successful gas-permeable contact lens (RGPCL) fitting is not easy for those patients with extremely irregular corneal surface.The purpose of this review is to explore the individual RGPCL fitting for these special cases,and to analyze the latest developments and progress in this field through literature retrieval.The RGPCL fitting software programs based on corneal topography have been introduced.It will increase efficiency in fitting RGP.The current 3D printing technology has reached a high accuracy,which can accurately construct solid model of corneal anterior surface to meet the RGP simulation fitting requirements.According to the theoretical analysis and preliminary experimental results,RGPCL simulation fitting in 3D printing technology had a good feasibility and practicability.
作者
王丽纯
陈跃国
张钰
Wang Lichun;Chen Yueguo;Zhang Yu(Department of Ophthalmology,The Second Hospital of Zhengzhou. Zhengzhou 450006,Henan,China;Department of Ophthalmology,Peking University Third Hospital,Peking 100191,China)
出处
《国际眼科纵览》
2019年第2期89-93,共5页
International Review of Ophthalmology
