Comparision of intraocular pressure measured using the new icare 200™ rebound tonometer and the Perkins™ applanation tonometer in healthy subjects and in patients with primary congenital glaucoma

Pérez-García, Pilar; Morales-Fernández, Laura; Sáenz-Francés, F.; Méndez-Hernández, Carmen; García‐Feijoó, Julián; Santos-Bueso, E.; Martínez-de-la-Casa, J.M.

doi:10.1016/j.oftale.2020.06.013

Cited by 4 publications

(10 citation statements)

References 17 publications

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“…All IOP values in the current study measured by GAT, IcarePRO, and IC200 were affected by the central corneal thickness (Table 4; Supplemental Table 2; all r > 0.20, P < 0.05), which agrees with the findings of previous studies using IC200 (r = 0.32) [9], GAT (r = 0.16-0.28) [15,20], and IcarePRO (r = 0.26) [20]. Similar findings have also been reported with other Icare tonometers, including IcareHOME (r = 0.40) [21], IC100 (r = 0.50) [22], and IcareTA01i (r = 0.46) [22].…”

Section: Discussionsupporting

confidence: 91%

“…reported that the IOP of IC200 was higher than that of GAT by 1.27 mmHg in 96 patients with glaucoma and 60 healthy subjects. Perez-Garcia et al [9]. also reported that IC200 was higher than GAT by 0.82 mmHg in 40 patients with congenital glaucoma and 42 healthy subjects.…”

Section: Discussionmentioning

confidence: 91%

“…As for IC200, in this study, the mean IOP was approximately 3 mmHg lower than that of GAT IOP. Earlier reports that compared IC200 and GAT indicated scattered results [8,9]. Badakere et al [8].…”

Section: Discussionmentioning

confidence: 99%

“…A new member has very recently joined the Icare series family i.e., IC200, which is expected to provide an even more accurate measurement of IOP, particularly in the supine position, because of its renewed position censor. Two recent reports have investigated the agreement between GAT and IC200, but these analyses were conducted only in the sitting position [8,9]. The first aim of the current study is to compare the IOP values and their reproducibility measured with IC200, GAT, and Icare-PRO in the sitting position.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of rebound tonometer iCare IC200 as compared with IcarePRO and Goldmann applanation tonometer in patients with glaucoma

Nakakura¹,

Asaoka

Terao³

et al. 2021

Eye and Vis

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Background This study investigated the agreement between a new rebound tonometer, IC200, and IcarePRO and Goldmann applanation tonometry (GAT). Methods This was a prospective cross-sectional study. We measured the intraocular pressure (IOP) in 145 eyes of 145 glaucoma patients in the sitting position using GAT, IcarePRO, and IC200. IcarePRO and IC200 measurements were also obtained in the supine position. IC200 measurement was performed using two modes: single six (IC200-single) and automatic (IC200-continuous) six-measurements mode. Results All tonometers provided high reproducibility in both positions (all intraclass correlation coefficients > 0.90), although it was highest with GAT, followed by IC200-continuous and IC200-single and then IcarePRO. In the sitting position, the mean (± SD) IOPs of GAT, IcarePRO, IC200-single, and IC200-continuous were 14.5 ± 2.9 mmHg, 13.3 ± 3.2 mmHg, 11.6 ± 3.2 mmHg, and 11.5 ± 3.2 mmHg, respectively. IOPs measured with IcarePRO or IC200 were significantly lower than those with GAT, particularly in patients with low IOP. IOPs measured with all tonometers were significantly elevated in the supine position as compared with the sitting position, but this difference was significantly greater with IC200-single and IC200-continuous compared with IcarePRO. IOP elevation was significant in eyes without bleb versus those with bleb, but this finding was not observed when IOP was measured with IcarePRO. The IOPs of the single and continuous modes of IC200 were interchangeable in both positions. Conclusions GAT, IcarePRO, and IC200 had sufficiently high reproducibility, but measurements with IcarePRO may not be accurate in the supine position. Elevation of IOP in the supine position, especially in eyes with bleb, was more sensitively captured with IC200 than with IcarePRO. Trial registration Japan Clinical Trials Register, No. UMIN000039982.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of rebound tonometer iCare IC200 as compared with IcarePRO and Goldmann applanation tonometer in patients with glaucoma

Nakakura¹,

Asaoka

Terao³

et al. 2021

Eye and Vis

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show abstract

“…However, 2 other studies comparing the IC200 showed that the IC200 measured a higher IOP than the GAT. [20][21] In a study of 96 Glaucoma and 60 healthy subjects Badakere et al [20]. reported a mean difference of +1.27 mmHg.…”

Section: Discussionmentioning

confidence: 99%

A Comparison of Intraocular Pressure Measurement using SUOER SW-500 Rebound Tonometer and Conventional Reusable Goldmann Prisms

Chaung¹,

Sangapillai²,

Quilat³

et al. 2023

Preprint

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Background To determine the agreement between intraocular pressure (IOP) measurements using conventional Goldmann applanation tonometry (GAT) and SUOER SW-500 Rebound Tonometer. Methods This was a prospective observational study where 205 eyes of 106 glaucoma patients had their IOPs measured by 2 fellowship trained ophthalmologists. Data were analysed using the Bland-Altman method of differences. Correlation was measured using the Pearson coefficient. Results Most of our patients were Chinese (88.7%) and female (51.9%). The average age was 66.9 years. The range of IOPs as measured by GAT was 2 to 58 mm Hg. Using the Bland-Altman method to compare GAT and SUOER SW-500 Rebound Tonometer. The tonometer overestimated the IOP by 0.5mm Hg in the right eye and underestimated it by 0.1 mm Hg in the left eye. The Tonometer IOP correlated well with GAT, with a Pearson coefficient of correlation(r) of 0.89 (P < 0.001) for the right eye and 0.86 (P < 0.001) for the left eye, respectively. In patients with GAT IOP ≥ 21 mm Hg (n = 25), the Tonometer underestimated the IOP by 2.96 mm Hg. Conclusions The IOP measurements from the SUOER SW-500 Rebound Tonometer correlates with the conventional GAT in measuring the IOP. SUOER SW-500 Rebound Tonometer may be of use, especially if the risk of transmission of infection is high considering that the probes are disposable. It is easy to use and its small size and portability makes it useful in situations where the patient is unable to be examined at the slit lamp.

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Assessing the Reliability of Intraocular Pressure Measurements Using Rebound Tonometry

Realini

McMillan

Gross

et al. 2021

Journal of Glaucoma

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Precis: In a trio of prospective studies, the iCare rebound tonometer demonstrated significantly lower test-retest variability than Goldmann tonometry with good interoperator and interdevice reproducibility, supporting its value in monitoring intraocular pressure (IOP) changes over time. Purpose: The purpose of this study was to characterize intraoperator and interoperator and interdevice reliability of IOP measurements with rebound tonometry (RT, ic100). Methods: Three prospective cross-sectional studies were conducted in distinct sample of adult patients with established glaucoma, suspected glaucoma, or no glaucoma at the West Virginia University Eye Institute. Participants in study 1 underwent 5 RT measurements in one randomly selected eye and 5 Goldmann tonometry measurements in the fellow eye by 1 operator; intraoperator variability was compared using the F test. In study 2, 3 operators each obtained 3 RT measurements in participants in randomized operator order. In study 3, a single operator collected 3 measurements each with 3 RTs in randomized device order. Between-operator and between-device reproducibility were characterized using intraclass correlation coefficients (ICCs). Results: Overall, 28, 19, and 25 subjects participated in the 3 respective studies. Within-subject variance across subjects was 0.757 in RT measurements and 2.471 in Goldmann measurements (P=0.0035). Interoperator reproducibility of RT measurements was good in both eyes [ICC for right eyes 0.78, 95% confidence interval (CI): 0.60-0.85; ICC for left eyes 0.75, 95% CI: 0.50-0.83]. Interdevice reproducibility of RT measurements was good approaching excellent (ICC for right eyes 0.87, 95% CI: 0.83-0.90; ICC for left eyes 0.89, 95% CI: 0.86-0.91). Conclusions: The RT’s lower measurement variability and good interoperator and interdevice reproducibility suggest that it can characterize IOP changes over time more robustly than Goldmann tonometry, aiding clinicians in assessing the effectiveness of glaucoma therapy and the consistency of IOP control.

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Comparision of intraocular pressure measured using the new icare 200™ rebound tonometer and the Perkins™ applanation tonometer in healthy subjects and in patients with primary congenital glaucoma

Cited by 4 publications

References 17 publications

Evaluation of rebound tonometer iCare IC200 as compared with IcarePRO and Goldmann applanation tonometer in patients with glaucoma

Evaluation of rebound tonometer iCare IC200 as compared with IcarePRO and Goldmann applanation tonometer in patients with glaucoma

A Comparison of Intraocular Pressure Measurement using SUOER SW-500 Rebound Tonometer and Conventional Reusable Goldmann Prisms

Assessing the Reliability of Intraocular Pressure Measurements Using Rebound Tonometry

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