Dynamic contour tonometry in comparison to intracameral IOP measurements
Dynamic contour tonometry in comparison to intracameral IOP measurements
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DOI：
10.1167/iovs.07-1366
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发表时间：
2008-06-01
影响因子：
4.4
通讯作者：
Spoerl, Eberhard
中科院分区：
文献类型：
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作者：
Boehm, Andreas G.;Weber, Anja;Spoerl, Eberhard
目的。本研究的目的是检查中央角膜厚度 (CCT)、角膜曲率、散光、眼轴 (AL) 和年龄对帕斯卡动态轮廓眼压计 (DCT) 测量的影响。方法。在一项前瞻性临床试验中，对 75 名接受超声乳化手术的患者的 75 只眼睛进行了检查。在超声乳化术之前，在颞角膜缘处对前房插管。在封闭系统中，通过测压水柱将 IOP 直接设置为 15、20 或 35 mm Hg。将 DCT 测量的 IOP 测量值与精密参考压力传感器的前房内测量值进行比较。结果。 60 名患者的测量结果适合进行统计分析。当 IOP 为 15 mm Hg 时，DCT 测量的 IOP 与前房内 IOP 测量的平均差异为 -0.02 +/- 1.32 mm Hg； 20 毫米汞柱时为-0.2 +/- 1.44 毫米汞柱，35 毫米汞柱时为-0.84 +/- 1.90 毫米汞柱。根据 Lin 的说法，一致性系数为 0.9763，表明 DCT 测量的 IOP 与前房内测量的 IOP 之间具有良好的一致性。 DCT 减去前房内 IOP 测量的 IOP 差异与 CCT 之间存在统计学显着相关性（P = 0.0291，R-2 = 0.00012）。所有其他参数对 DCT 和前房内 IOP 之间的差异没有统计学上的显着影响（角膜曲率，P = 0.6094，R-2 = 0.00367；年龄，P = 0.9198，R-2 = 0.000003；散光，P = 0.1564，R-2 = 0.08497；眼轴长度，P = 0.9484，R-2 = 0.00008）。结论。 DCT 测量结果与前房内 IOP 具有良好的一致性。 CCT 对 DCT 测量产生统计学上显着但临床上无关的影响。
PURPOSE. The purpose of the study was to examine the effect of central corneal thickness (CCT), corneal curvature, astigmatism, axial length (AL), and age on measurements with the Pascal Dynamic Contour Tonometer (DCT).METHODS. In a prospective clinical trial 75 eyes of 75 patients undergoing phacoemulsification were examined. Before phacoemulsification, the anterior chamber was cannulated at the temporal corneal limbus. In a closed system the IOP was directly set to 15, 20, or 35 mm Hg with a manometric water column. IOP measurements taken by DCT were compared to intracameral measurements with a precision reference pressure sensor.RESULTS. Measurements from 60 patients were suitable for statistical analysis. At IOP of 15 mm Hg, the mean difference between IOP measured by DCT and intracameral IOP was -0.02 +/- 1.32 mm Hg; at 20 mm Hg it was -0.2 +/- 1.44 mm Hg and at 35 mm Hg, -0.84 +/- 1.90 mm Hg. The concordance coefficient according to Lin was 0.9763, showing good agreement between DCT- and intracamerally measured IOP. There was a statistically significant correlation between the difference in IOP measured by DCT minus intracameral IOP and CCT (P = 0.0291, R-2 = 0.00012). All other parameters had no statistically significant effect on the difference between DCT and intracameral IOP (corneal curvature, P = 0.6094, R-2 = 0.00367; age, P = 0.9198, R-2 = 0.000003; astigmatism, P = 0.1564, R-2 = 0.08497; and axial length, P = 0.9484, R-2 = 0.00008).CONCLUSIONS. Measurements with the DCT showed good concordance with intracameral IOP. CCT exerted a statistically significant but clinically irrelevant effect on measurements with the DCT.