INTRAOPERATIVE RASTER PHOTOGRAMMETRY THE PAR CORNEAL TOPOGRAPHY SYSTEM

被引：20

作者：

BELIN, MW

机构：

[1] Division of Corneal and External Disease and Refractive Surgery, Albany Medical College, Department of Ophthalmology, Albany, New York

来源：

JOURNAL OF CATARACT AND REFRACTIVE SURGERY | 1993年 / 19卷

关键词：

ERBIUM YAG LASER; PHOTOABLATION; PHOTOGRAMMETRY; PHOTOREFRACTION; RASTERSTEREOGRAPHY; TOPOGRAPHY; VIDEOKERATOSCOPE;

D O I：

10.1016/S0886-3350(13)80405-1

中图分类号：

R77 [眼科学];

学科分类号：

100212 [眼科学];

摘要：

The PAR Corneal Topography System (CTS) is a computer-driven corneal imaging system that uses close-range raster photogrammetry to measure and produce a topographic map of the corneal surface. The CTS determines distortion in a projected two-dimensional grid. Unlike Placido-disc-based videokeratoscopes, the PAR CTS produces a true topographic map (elevation map) and requires neither a smooth reflective surface nor precise spatial alignment for accurate imaging. Because the system uses two noncoaxial optical paths, it can be integrated into other optical devices. A modified CTS was integrated into an experimental erbium: YAG photoablative laser. The CTS successfully imaged corneas before, after, and during laser photoablation. Its ability to image nonreflective surfaces and to be integrated into other optical systems may make it suitable for intraoperative refractive monitoring.

引用

页码：188 / 192

页数：5

共 12 条

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