使用Orbscan地形系统测量前房深度。

Measuring anterior chamber depth with Orbscan Topography System.

作者信息

Auffarth G U, Tetz M R, Biazid Y, Völcker H E

机构信息

Department of Ophthalmology, Ruprecht-Karls-University of Heidelberg, Germany.

出版信息

J Cataract Refract Surg. 1997 Nov;23(9):1351-5. doi: 10.1016/s0886-3350(97)80114-9.

DOI:10.1016/s0886-3350(97)80114-9

PMID:9423907

Abstract

PURPOSE

To assess the reliability of the Orbscan Topography System in measuring anterior chamber depth (ACD).

SETTING

Department of Ophthalmology, Ruprecht-Karls-University of Heidelberg, Heidelberg, Germany.

METHODS

The Orbscan Topography System is a 3-D, scanning slit beam system for analyzing corneal surfaces as well as structures of the anterior segment, e.g., iris, lens. Reflected surface data points are measured in the x, y, and z axes, creating color-coded true surface topography maps. We measured ACD prior to cataract surgery in 56 eyes of 37 patients (mean age 70.4 years + 13.2 [SD]) using the Orbscan system and, as a control, the Grieshaber Biometric System (ultrasound) and the Jäger ACD slitlamp measurement system.

RESULTS

Mean ACD values measured with the Orbscan system were 3.23 +/- 0.55 mm; ultrasound measurements were 3.27 +/- 0.54 mm and Jäger measurements, 3.10 +/- 0.55 mm. The average difference between Orbscan and ultrasound values was 0.04 +/- 0.15 mm. The correlation coefficient between Orbscan and ultrasound was 0.96 (P < .00001) and between Orbscan and Jäger, 0.899 (P < .0001).

CONCLUSION

The ACD measurements by the Orbscan system were equivalent to common reference measurements.

摘要

目的

评估Orbscan地形测量系统测量前房深度（ACD）的可靠性。

设置

德国海德堡鲁普雷希特-卡尔斯大学眼科。

方法

Orbscan地形测量系统是一种三维扫描裂隙光束系统，用于分析角膜表面以及眼前节结构，如虹膜、晶状体。在x、y和z轴上测量反射表面数据点，生成彩色编码的真实表面地形图。我们使用Orbscan系统在37例患者（平均年龄70.4岁±13.2[标准差]）的56只眼中测量白内障手术前的ACD，并作为对照，使用Grieshaber生物测量系统（超声）和Jäger ACD裂隙灯测量系统。

结果

Orbscan系统测量的平均ACD值为3.23±0.55mm；超声测量值为3.27±0.54mm，Jäger测量值为3.10±0.55mm。Orbscan和超声值之间的平均差异为0.04±0.15mm。Orbscan与超声之间的相关系数为0.96（P<.00001），Orbscan与Jäger之间的相关系数为0.899（P<.0001）。