圆锥角膜的角膜厚度对使用IOPen眼压计、iCare眼压计、动态轮廓眼压计和Goldmann压平眼压计测量眼压的影响
[Influence of corneal thickness in keratoconic corneas on IOP measurement with IOPen, iCare, dynamic contour tonometry and Goldmann applanation tonometry].
作者信息
Klamann M K J, Maier A-K B, Gonnermann J, Ruokonen P, Bertelmann E, Torun N
机构信息
Augenklinik, Universitätsmedizin Charité Berlin, Augustenburgerplatz 1, Berlin.
出版信息
Klin Monbl Augenheilkd. 2013 Jul;230(7):697-700. doi: 10.1055/s-0032-1328408. Epub 2013 May 13.
BACKGROUND
The aim of this study was to evaluate the effect of central corneal thickness (CCT) of keratoconic corneas on intraocular pressure (IOP) measurements as measured by four different techniques.
PATIENTS AND METHODS
Forty-one eyes of forty-one keratoconus patients (group 1) and fifty eyes of fifty healthy subjects (group 2) were enrolled. IOP was measured with iCare, IOPen, Goldmann applanation tonometry (GAT) and dynamic contour tonometry (DCT). CCT was measured by ultrasonic pachymetry. These data were used for statistical analysis.
RESULTS
The mean IOPs measured by GAT, DCT, iCare and IOPen were 11.4, 14.7, 10.8, and 15.7 mmHg in group 1; and 14.2, 15.4, 15.4 and 14.3 mmHg in group 2, respectively. Between both groups, there was a statistically significant difference in iCare (p < 0.001), GAT (p < 0.001) and IOPen (p = 0.040) measurements; with no difference between DCT (p = 0.266) measurements. IOPen measurements were significantly associated with CCT (r = - 0.314; p = 0.046).
CONCLUSION
IOPen seemed to be affected by CCT. IOP readings by iCare, GAT and DCT were found to be independent of CCT in keratoconic corneas.
背景
本研究的目的是评估圆锥角膜的中央角膜厚度（CCT）对通过四种不同技术测量的眼压（IOP）的影响。
患者与方法
纳入41例圆锥角膜患者的41只眼（第1组）和50例健康受试者的50只眼（第2组）。使用iCare、IOPen、Goldmann压平眼压计（GAT）和动态轮廓眼压计（DCT）测量眼压。通过超声测厚法测量中央角膜厚度。这些数据用于统计分析。
结果
第1组中，通过GAT、DCT、iCare和IOPen测量的平均眼压分别为11.4、14.7、10.8和15.7 mmHg；第2组中分别为14.2、15.4、15.4和14.3 mmHg。两组之间，iCare测量值（p < 0.001）、GAT测量值（p < 0.001）和IOPen测量值（p = 0.040）存在统计学显著差异；DCT测量值之间无差异（p = 0.266）。IOPen测量值与中央角膜厚度显著相关（r = - 0.314；p = 0.046）。
结论
IOPen似乎受中央角膜厚度影响。发现iCare、GAT和DCT测量的眼压读数在圆锥角膜中与中央角膜厚度无关。
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