Day to day Clinically Relevant Corneal Elevation, Thickness, and Curvature parameters Using the Orbscan II Scanning Slit Topographer and the Pentacam Scheimpflug Imaging Device
Day to day Clinically Relevant Corneal Elevation, Thickness, and Curvature parameters Using the Orbscan II Scanning Slit Topographer and the Pentacam Scheimpflug Imaging Device
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DOI：
10.4103/0974-9233.61216
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发表时间：
2010-01-01
影响因子：
0.6
通讯作者：
Mehravaran, Shiva
中科院分区：
文献类型：
--
作者：
Hashemi, Hassan;Mehravaran, Shiva
临床眼科引入了不同的技术和计算机设备，大大提高了我们对眼睛、光学和眼病的认识。今天，角膜地形图是用各种各样的设备来执行的，这些设备实现了各种各样的技术。先进的计算机化分析系统为我们提供了简单而快速的评估程序，但是产生的复杂数据和临床信息只能在充分了解系统本身以及使用这些系统评估的各种属性的可接受正常范围的情况下进行解释。常用的两种计算机化地形系统是Orbscan（美国纽约州罗切斯特市的Bausch and Lomb Inc.）和Pentacam（德国Wetzlar市的Oculus GmBH）。Orbscan是一种裂隙扫描设备，Pentacam是一种Scheimpflug成像设备。在这篇综述中，我们简要介绍了这两种技术，每种设备中实现的技术以及每种设备的采集过程。接下来将列出一系列角膜参数，这些参数在筛选患者进行屈光手术时需要进行评估。我们将讨论如何显示这些参数，每个参数如何作为临床标准，以及如何解释数据。我们还将尝试提供关于不同测量的准确性的证据，以及两种设备的可比性。
The introduction of different techniques and computerized devices into clinical ophthalmology has significantly improved our knowledge of the eyes, optics, and eye conditions. Today, corneal topography is performed with a wide range of devices that implement a variety of techniques. Advance computerized analysis systems provide us with simple and quick evaluation procedures, yet the sophisticated data and clinical information that is generated can only be interpreted with adequate knowledge of the system itself as well as the accepted normal ranges of various properties assessed with these systems. Two computerized topography systems that are in common use are the Orbscan (Bausch and Lomb Inc., Rochester, NY, USA) and the Pentacam (Oculus GmBH, Wetzlar, Germany). The Orbscan is a slit-scanning device and the Pentacam is Scheimpflug imaging device. In this review, we present a brief description of both technologies, the techniques implemented in each device and the acquisition process with each. This will be followed by a list of corneal parameters that need to be assessed in screening patients for refractive surgery. We will discuss how these parameters are displayed, how each parameter may serve as clinic criteria, and how data should be interpreted. We will also try to provide evidence regarding the accuracy of different measurements, and the comparability of the two devices.