Mandour Sameh Saad, Elframawy Ahmed, Murad Mohammad Moataz, Nage Sara Abd Elmegeed
Ophthalmology Department, Faculty of Medicine, Menoufia University, Shebin El Kom, Menoufia, Egypt.
Faculty of Medicine, Cairo University, Cairo, Egypt.
J Curr Ophthalmol. 2024 Aug 10;35(4):326-331. doi: 10.4103/joco.joco_180_23. eCollection 2023 Oct-Dec.
To investigate the agreement between the Goldmann tonometer (GAT), the air-puff tonometer, and the iCare tonometer in intraocular pressure (IOP) evaluation as well as their association with central corneal thickness (CCT) in normal participants, glaucoma patients, and patients following refractive surgery.
This is a cross-sectional study conducted on 204 eyes from 102 patients. The study consisted of three equal groups: group I (control group, = 34), group II (glaucoma patients on medication, = 34), and group III (refractive surgery patients, = 34). All patients were subjected to examination (complete ocular examination, refraction, and IOP measurement).
A total of 102 participants were included in the study with both genders distributed equally. The mean ± standard deviation age was 44.12 ± 12.8 years in the control group while it was 46.29 ± 13.24 years in the glaucoma group and 40.68 ± 15.86 years in the refractive surgery group. Overall, there was a high correlation between the three methods. The mean IOP measured by GAT was 14.03 ± 3.43. The mean IOP measured by iCare was 15.16 ± 3.46. The mean IOP measured by air-puff was 16.66 ± 3.6. The iCare showed the most significant agreement with the GAT (intraclass correlation coefficient [ICC] 0.985, > 0.05) and the mean difference in IOP between GAT and iCare was 1.1 (95% limits of agreement, -0.62-+2.85 mmHg). The mean difference in IOP between iCare and air-puff was 1.5 and it was 2.6 between GAT and air-puff. There were no significant differences in IOP measurements between GAT and iCare tonometer or between iCare tonometer and air-puff in all groups ( > 0.05). However, there were significant differences in IOP measurements between GAT and air-puff in all groups ( < 0.001). The ICC between all studied methods was strong (ICC > 0.92 for all). Regarding CCT, the mean CCT was 517.14 ± 29.82 μm. There were significant positive correlations between increasing CCT and increasing IOP by GAT, iCare, and air-puff tonometer among the three groups ( < 0.001).
In conclusion, the iCare tonometer, specifically the iCare PRO RT model, is a reliable and efficient alternative instrument for assessing IOP. The IOP values obtained with the iCare PRO RT were found to be consistent with those obtained using the air-puff and GAT.
研究戈德曼眼压计（GAT）、非接触眼压计和气眼压计在正常参与者、青光眼患者及屈光手术患者眼压（IOP）评估中的一致性，以及它们与中央角膜厚度（CCT）的相关性。
这是一项对102例患者的204只眼进行的横断面研究。该研究包括三个相等的组：第一组（对照组，n = 34），第二组（药物治疗的青光眼患者，n = 34），第三组（屈光手术患者，n = 34）。所有患者均接受检查（全面眼部检查、验光和眼压测量）。
共有102名参与者纳入研究，男女分布均匀。对照组的平均±标准差年龄为44.12±12.8岁，青光眼组为46.29±13.24岁，屈光手术组为40.68±15.86岁。总体而言，三种方法之间存在高度相关性。GAT测量的平均眼压为14.03±3.43。iCare测量的平均眼压为15.16±3.46。非接触眼压计测量的平均眼压为16.66±3.6。iCare与GAT显示出最显著的一致性（组内相关系数[ICC] 0.985，P>0.05），GAT和iCare之间眼压的平均差异为1.1（95%一致性界限，-0.62至+2.85 mmHg）。iCare与非接触眼压计之间眼压的平均差异为1.5，GAT与非接触眼压计之间为2.6。所有组中，GAT与iCare眼压计之间或iCare眼压计与非接触眼压计之间的眼压测量无显著差异（P>0.05）。然而，所有组中GAT与非接触眼压计之间的眼压测量存在显著差异（P<0.001）。所有研究方法之间的ICC很强（所有ICC>0.92）。关于CCT，平均CCT为517.14±29.82μm。三组中，GAT、iCare和气眼压计测量的CCT增加与眼压增加之间存在显著正相关（P<0.001）。
总之，iCare眼压计，特别是iCare PRO RT型号，是评估眼压的可靠且高效的替代仪器。发现使用iCare PRO RT获得的眼压值与使用非接触眼压计和GAT获得的值一致。
