Department of Ophthalmology, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
Faculty of Health Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel.
J Glaucoma. 2023 Nov 1;32(11):926-929. doi: 10.1097/IJG.0000000000002298. Epub 2023 Aug 25.
The iCare HOME2 tonometer generally can be considered reliable for most eyes and clinical settings, although it may produce slightly overestimated or underestimated intraocular pressure (IOP) readings in thicker and thinner corneas, respectively.
To evaluate the accuracy, correlation, and analysis of differences in IOP measurements between the gold standard Goldmann applanation tonometer (GAT) and the new, self-measurement iCare HOME2 tonometer (icare).
In this retrospective study, patients were randomly selected from those who attended a routine examination in our clinic. After a complete ocular examination, each patient's IOP was measured and recorded with GAT and iCare HOME2. Central corneal thickness was measured. Eyes with any corneal morbidity were excluded. Pearson correlation coefficient was used to determine the correlation between paired IOP measurements. Bland-Altman plots were graphed for the analysis of differences in IOP between the instruments.
One hundred thirty-five eyes of 70 patients were included in the study. The mean IOP measured with GAT was 16.3 ± 6.5 mm Hg (range: 3-56). The mean IOP measured with iCare HOME2 was 16.5 ± 7.3 mm Hg (range: 3-55), ( P = 0.47). A strong, significant positive correlation was found for paired IOP measurements by the 2 instruments ( r = 0.94; P < 0.0001). A small systematic proportional bias was seen for the paired IOP measurements, meaning that with higher IOPs the iCare HOME2 yielded higher IOP readings than GAT, but this difference was clinically insignificant. The instrument underestimated IOPs with corneas thinner than 522 µm, whereas it overestimated IOPs when corneas were thicker than this.
The iCare HOME2 could be a reliable tonometer for most eyes and clinical settings. Central corneal thickness measurement is recommended in patients who use the instrument.
iCare HOME2 眼压计通常可被认为在大多数眼睛和临床环境中具有可靠性，尽管它在较薄和较厚的角膜中分别可能产生稍微偏高或偏低的眼压 (IOP) 读数。
评估 Goldmann 压平眼压计（GAT）和新型自我测量 iCare HOME2 眼压计（icare）之间 IOP 测量的准确性、相关性和差异分析。
在这项回顾性研究中，从参加我们诊所常规检查的患者中随机选择患者。在进行全面眼部检查后，使用 GAT 和 iCare HOME2 分别测量并记录每位患者的眼压。测量中央角膜厚度。排除任何角膜病变的眼睛。使用 Pearson 相关系数确定配对 IOP 测量之间的相关性。绘制 Bland-Altman 图以分析两种仪器之间的 IOP 差异。
本研究共纳入 70 例患者的 135 只眼。GAT 测量的平均眼压为 16.3±6.5mmHg（范围：3-56）。iCare HOME2 测量的平均眼压为 16.5±7.3mmHg（范围：3-55），（P=0.47）。两种仪器的配对 IOP 测量之间存在强、显著的正相关（r=0.94；P<0.0001）。对于配对的 IOP 测量，观察到小的系统比例偏差，这意味着在较高的眼压下，iCare HOME2 产生的眼压读数高于 GAT，但这种差异在临床上无意义。当角膜厚度小于 522μm 时，仪器会低估眼压，而当角膜厚度大于此值时，仪器会高估眼压。
iCare HOME2 对于大多数眼睛和临床环境来说是一种可靠的眼压计。建议使用该仪器的患者进行中央角膜厚度测量。
