Vandewalle Evelien, Vandenbroeck Sofie, Stalmans Ingeborg, Zeyen Thierry
Department of Ophthalmology, University Hospitals Leuven, Campus St Raphaël, Leuven, Belgium.
Eur J Ophthalmol. 2009 Sep-Oct;19(5):783-9. doi: 10.1177/112067210901900516.
To compare the intraocular pressure (IOP) readings taken by ICare, Pascal dynamic contour tonometer (DCT), and ocular response analyzer (ORA) with those taken by Goldmann applanation tonometer (GAT). We sought to evaluate the influence of central corneal thickness (CCT) on IOP measurements and to compare patients' preferences for the four tonometers.
In this prospective study, 93 eyes from 93 patients were examined. Patients were randomly divided into 4 groups to vary the order in which the tonometers were applied. CCT was measured with an ultrasound pachymeter.
The average CCT was 558+/-47.4 microm. The mean +/- standard deviation IOP for GAT, ICare, DCT, and ORA (Goldmann-correlated IOP) (ORA(GC)) were 15.1+/-4.8, 15.7+/-5.7, 18.2+/-5.1, and 18.3+/-6.6 mmHg, respectively. There was no significant difference between the mean IOP obtained with GAT and ICare (p=0.14). There was also no difference in IOP levels between the mean IOP obtained with DCT and ORA (p=0.26). There was no correlation between IOP measurements and CCT for the 4 instruments. Bland-Altman graphs showed disagreement between the measurements taken by GAT and the other instruments. There was no significant difference in patients' preference among the 4 instruments (p=0.48).
IOP readings from ICare were consistent with those from GAT, whereas DCT readings correspond well to ORA(GC) measurements. DCT and ORA readings both overestimated the GAT readings. There was no correlation between the IOP measurements and the CCT for the 4 instruments. There was no significant difference in patients' preference among the 4 instruments.
比较ICare眼压计、帕斯卡动态轮廓眼压计（DCT）和眼反应分析仪（ORA）所测眼压读数与戈德曼压平眼压计（GAT）所测眼压读数。我们试图评估中央角膜厚度（CCT）对眼压测量的影响，并比较患者对这四种眼压计的偏好。
在这项前瞻性研究中，对93例患者的93只眼睛进行了检查。患者被随机分为4组，以改变眼压计的使用顺序。使用超声角膜测厚仪测量CCT。
平均CCT为558±47.4微米。GAT、ICare、DCT和ORA（戈德曼相关眼压）（ORA(GC)）的平均±标准差眼压分别为15.1±4.8、15.7±5.7、18.2±5.1和18.3±6.6 mmHg。GAT和ICare所测平均眼压之间无显著差异（p = 0.14）。DCT和ORA所测平均眼压水平之间也无差异（p = 0.26）。这4种仪器的眼压测量值与CCT之间均无相关性。Bland-Altman图显示GAT与其他仪器所测值之间存在差异。4种仪器在患者偏好方面无显著差异（p = 0.48）。
ICare所测眼压读数与GAT一致，而DCT读数与ORA(GC)测量值相符。DCT和ORA读数均高估了GAT读数。4种仪器的眼压测量值与CCT之间均无相关性。4种仪器在患者偏好方面无显著差异。
