公开(公告)号：US06287299B1

公开(公告)日：2001-09-11

申请号：US09315894

申请日：1999-05-21

申请人： Michael W. Sasnett ,  R. Russel Austin

发明人： Michael W. Sasnett ,  R. Russel Austin

IPC分类号： A61F1800

CPC分类号： A61F9/008 ,  A61F9/00802 ,  A61F2009/00846 ,  A61F2009/00855 ,  A61F2009/00872 ,  A61F2009/00897

摘要： Fluence monitoring apparatus is disclosed for a system for modifying curvature of the cornea of an eye by selective laser photoablation of corneal tissue by delivery of pulses of laser radiation to the cornea in an overlapping pattern. The system includes a scanner for directing the pulses to form the overlapping pattern, the movement of which is modified by an eye-tracker. A beamsplitter is located between the scanner and the cornea for directing a fraction of each of the pulses to a fixed monitor plate, which emits fluorescent light on being irradiated by each pulse-fraction. A video camera 100 images the monitor plate. Processing circuitry periodically records the image which includes images of pulse-fractions delivered during the period between recordings. These recordings are electronically integrated and processed to form a composite image representative of spatial distribution of laser fluence on the cornea.

摘要翻译： 公开了一种用于通过以重叠图案将激光辐射脉冲递送到角膜的角膜组织的选择性激光光切割来修改眼睛角膜曲率的系统的流量监测装置。 该系统包括用于引导脉冲以形成重叠图案的扫描器，其移动由眼睛跟踪器修改。 分束器位于扫描器和角膜之间，用于将每个脉冲的一部分引导到固定的监视器板，固定的监视器板在被每个脉冲分数照射时发射荧光。 摄像机100对监视器板进行成像。 处理电路周期性地记录包括记录期间传送的脉冲分数的图像的图像。 这些记录被电子整合并处理，以形成代表角膜上的激光注量的空间分布的复合图像。