NCT Reichert R7 与 Goldmann 压平眼压计和 Reichert 眼反应分析仪的比较。
A comparison of the NCT Reichert R7 with Goldmann applanation tonometry and the Reichert ocular response analyzer.
机构信息
Clinical & Experimental Optometry Research Lab, Center of Physics, School of Science, University of Minho, Braga, Portugal.
出版信息
Ophthalmic Physiol Opt. 2011 Mar;31(2):174-9. doi: 10.1111/j.1475-1313.2010.00817.x.
PURPOSE
The aim of this study was to evaluate the accuracy of intraocular pressure (IOP) values from the new non-contact tonometer (NCT) Reichert R7 by comparing results with those from Goldmann applanation tonometry (GAT) and the Reichert Ocular Response Analyzer (ORA). Other ocular dimensions were assessed to evaluate their potential influence on the IOP values obtained.
METHODS
Ninety two right eyes from 92 adults aged between 21 and 59 years (mean 34.9 ± 11.7 years) were enrolled in this study. IOP was measured with R7, ORA and GAT. All measurements were taken between 14:00 and 16:00 in the afternoon. Corneal resistance factor (CRF) and corneal hysteresis were measured with the Reichert ORA. The spherical equivalent refractive error was obtained using an open field auto-refractor (WAM5500; Grand Seiko) and corneal curvature, anterior chamber depth, corneal diameter and axial length were assessed with an optical coherence biometer (IOL Master; Zeiss Meditec, CA, USA).
RESULTS
The mean values for IOP measurements were 15.20 ± 3.37 mmHg (R7), 13.49 ± 3.55 mmHg (GAT), 15.01 ± 3.38 mmHg (ORA IOPcc) and 14.44 ± 3.47 mmHg (ORA IOPg). With the exception of the CRF (ρ = 0.72 p < 0.001) the correlations between ocular parameters and IOP obtained with the R7 were neither statistically nor clinically significant.
CONCLUSIONS
The new NCT, R7 overestimated the IOP compared with GAT in normal, healthy eyes by about 1.7 mmHg on average (95% confidence range of approximately -2 to +6 mmHg). The measures provided by the R7 were significantly influenced by the stiffness of the corneal tissue as measured by the ORA CRF value but not by other dimensional parameters of the eye.
目的
本研究旨在评估新型非接触眼压计（NCT）Reichert R7 的眼压（IOP）值的准确性，通过与 Goldmann 压平眼压计（GAT）和 Reichert 眼反应分析仪（ORA）的结果进行比较。评估其他眼部参数，以评估它们对所获得的IOP 值的潜在影响。
方法
本研究纳入了 92 名年龄在 21 至 59 岁之间（平均 34.9 ± 11.7 岁）的成年人的 92 只右眼。使用 R7、ORA 和 GAT 测量眼压。所有测量均在下午 2 点至 4 点之间进行。使用 Reichert ORA 测量角膜阻力因子（CRF）和角膜滞后。使用开放式自动折射计（WAM5500；Grand Seiko）获得等效球镜屈光误差，使用光学相干生物测量仪（IOL Master；Zeiss Meditec，CA，USA）评估角膜曲率、前房深度、角膜直径和眼轴。
结果
IOP 测量的平均值分别为 15.20 ± 3.37 mmHg（R7）、13.49 ± 3.55 mmHg（GAT）、15.01 ± 3.38 mmHg（ORA IOPcc）和 14.44 ± 3.47 mmHg（ORA IOPg）。除 CRF（ρ=0.72，p<0.001）外，R7 与IOP 之间的相关性在统计学和临床意义上均无显著意义。
结论
新型 NCT，R7 与 GAT 相比，在正常、健康的眼中平均高估了约 1.7 mmHg 的 IOP（95%置信区间约为-2 至+6 mmHg）。R7 提供的测量值受 ORA CRF 值测量的角膜组织硬度显著影响，但不受眼部其他尺寸参数的影响。
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