The influence of refractive errors on IOP measurement by rebound tonometry (ICare) and Goldmann applanation tonometry
The influence of refractive errors on IOP measurement by rebound tonometry (ICare) and Goldmann applanation tonometry
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DOI：
10.1007/s00417-009-1176-5
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发表时间：
2010-04-01
影响因子：
2.7
通讯作者：
Castaing, Marine
中科院分区：
文献类型：
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作者：
Avitabile, Teresio;Longo, Antonio;Castaing, Marine
为探讨屈光不正和角膜中央厚度（CCT）对ICare反跳眼压计（RT）测量眼压的影响及其与Goldmann压平眼压计（GAT）测量结果的一致性，采用RT和GAT分别测量正视眼（n = 78）、远视眼（n = 83）、近视眼（n = 87）和屈光不正眼（n = 79）。通过自动屈光计评估屈光。CCT通过超声测厚法进行评估，在所有组中，两种眼压计检测的IOP值没有观察者间显著差异（Wilcoxon符号秩检验不显著）。在所有组中，通过RT测量的IOP值高于通过GAT测量的IOP值（配对t检验p = 0.000）：近视眼的平均RT-GAT差异较高（+1.6 +/- 1.8 mmHg），其他组的平均RT-GAT差异小于1 mmHg。RT-GAT差异与屈光度相关（p < 0.001），并且当通过RT检测到较高IOP时，其更大（RT-GAT差异与通过RT测量的IOP之间显著相关，p < 0.001）。与GAT值相比，RT值> 2 mmHg者分别为正视眼17.9%、远视眼13.3%、近视眼34.5%和弱视眼7.6%。使用两种眼压计，在所有组中，IOP值与CCT相关在所有受试者组中，RT检测到较高的IOP值，IOP读数超过GAT值的范围通常小于1 mmHg，除非RT检测到IOP > 18 mmHg且通常在近视眼中; RT-GAT差异与屈光不正有关，而与CCT无关。
To evaluate the effect of refractive errors and central corneal thickness (CCT) on the measurement of intraocular pressure (IOP) by ICare rebound tonometer (RT), and its agreement with measurements by Goldmann applanation tonometer (GAT).Two observers measured the IOP by using RT and GAT in four groups of healthy volunteers with emmetropic (n = 78), hyperopic (n = 83), myopic (n = 87) and astigmatic (n = 79) eyes. Refraction was assessed by an autorefractometer. CCT was assessed by ultrasound pachymetry.In all groups, no significant interobserver difference was seen in IOP values detected by both tonometers (Wilcoxon signed-rank test not significant). In all groups, IOP values were higher as measured by RT than by GAT (paired t-test p = 0.000): mean RT-GAT difference was higher in myopic eyes (+1.6 +/- 1.8 mmHg), and it was less than 1 mmHg in the other groups. RT-GAT difference was correlated to the refraction (p < 0.001), and it was greater when an higher IOP was detected by RT (significant correlation between RT-GAT difference and IOP by RT, p < 0.001). Compared with GAT values, the IOP readings by RT were greater than 2 mmHg in respectively 17.9% (emmetropic), 13.3% (hyperopic), 34.5% (myopic) and 7.6% (astigmatic) of the eyes. With both tonometers, in all groups the IOP values were correlated with CCT (p < 0.05), but the discrepancy between RT and GAT values was not related to CCT.In all groups of subjects, higher IOP values were detected by RT; the IOP readings exceed the GAT values usually in a range of less than 1 mmHg, except when RT detects IOP > 18 mmHg and generally in myopic eyes; RT-GAT discrepancy is related to the refractive error, but not to CCT.