Correlation Between Dynamic Contour Tonometry, Uncorrected and Corrected Goldmann Applanation Tonometry, and Stage of Glaucoma

Wachtl, Josephine; Töteberg‐Harms, Marc; Frimmel, Sonja; Roos, Małgorzata; Kniestedt, Christoph

doi:10.1001/jamaophthalmol.2017.1012

Cited by 14 publications

(6 citation statements)

References 45 publications

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“…Subsequently we applied five modifications or corrections reviewed in [14] and our simple numerical simulation method based on ORA and proposed in [15]. The obtained results are presented in Fig.…”

Section: Tab 1 Individual Parameters Of Measured Subjects and Their Iopmentioning

confidence: 99%

Glaucoma vs. Biomechanical Properties of Cornea

Hučko

Lea

Ďuriš

et al. 2019

Strojnícky Časopis - Journal of Mechanical Engineering

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The paper deals with the influence of various biomechanical parameters on the intraocular pressure (IOP). The IOP is a very important factor in more accurate diagnosis and better management of glaucoma. To get a more realistic value of IOP the measurement methodology must reflect the patient’s individual biometric and biomechanical parameters, for example age, sex, race, biomechanical properties of cornea, etc. Many measuring methods are based on the applanation of cornea during its loading by the measuring device - tonometers. These tonometers apply the Imbert – Fick law [1], which determines their size. This work also addresses the current approaches to creating more realistic IOP data.

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Section: Tab 1 Individual Parameters Of Measured Subjects and Their Iopmentioning

confidence: 99%

Glaucoma vs. Biomechanical Properties of Cornea

Hučko

Lea

Ďuriš

et al. 2019

Strojnícky Časopis - Journal of Mechanical Engineering

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show abstract

“…Concerning the comparison between DCT and GAT correcting formulas 29 – 31 , our results aren’t always in agreement.…”

Section: Discussionmentioning

confidence: 58%

Comparison between dynamic contour tonometry and Goldmann applanation tonometry correcting equations

Bernardo

Casaburi

Pascale

et al. 2022

Sci Rep

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In order to investigate the reliability of correcting GAT formulas in comparison with dynamic contour tonometry (DCT), this study included 112 right eyes of 112 healthy subjects aged from 21 to 77 years, whose eyes underwent to a full ophthalmologic exam. IOP was measured in each eye with DCT and then with GAT. IOP values obtained with GAT were corrected with 10 equations and then compared with those provided by DCT. Participants mean age was 42.24 ± 14.08 years; mean IOP measured with DCT was 17.61 ± 2.87 and 15.50 ± 2.47 mmHg, measured with GAT. The mean discordance between DCT and GAT measurements was 2.11 ± 2.24 mmHg. All the correcting formulas, but Srodka one (p ˂ 0.001), tend to increase the difference between GAT and DCT. According to these results Śródka equation provides the best correction, reducing the difference between the two IOP measurement methods of − 0.03 ± 0.85 mmHg. Other equations do not provide a valid improvement of the agreement between the two methods or they provide a worsening of the agreement.

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“…[ 24 ] The use of such correction formulas is debatable, and a recent report found that the application such formulas did not yield better agreement between GAT and DCT. [ 25 26 ] As our primary goal was agreement between devices, no such correction was utilized in our study.…”

Section: Discussionmentioning

confidence: 99%

Comparison of intraocular pressure measurements using Goldmann tonometer, I-care pro, Tonopen XL, and Schiotz tonometer in patients after Descemet stripping endothelial keratoplasty

Ohana

Varssano

Shemesh

2017

Indian J Ophthalmol

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Purpose:Post-Descemet stripping endothelial keratoplasty (DSEK) patients are prone for intraocular pressure (IOP) elevations and glaucoma. Corneal characteristics influence various IOP measuring devices in various ways. The aim of this study was to evaluate the agreement between four different IOP measuring devices: Goldmann applanation tonometer (GAT), I-care pro, Tonopen XL, and Schiotz tonometr in patients who underwent DSEK.Methods:This was a prospective comparative study using a convenience cohort of post-DSEK patients with compact grafts. Post-DSEK patients had IOP measured using GAT, I-care Pro, Tonopen XL, and Schiotz tonometer. Measurements were compared and agreement assessed. Wilcoxon signed-rank test was used for comparison of means as variables did not show a normal distribution. Bland–Altman plots were used for assessing agreement.Results:Thirty eyes of 24 patients were included in the study. Mean time from DSEK surgery was 25.31 ± 13.05 months. Mean IOP with GAT, I-care pro, Tonopen XL, and Schiotz tonometer was 13.99 ± 3.76, 13.92 ± 3.36, 13.31 ± 3.89, and 12.83 ± 4.07, respectively. GAT, I-care pro, and Tonopen XL had similar mean IOP measurements (P = 0.135 and P = 0.551, respectively), while Schiotz tonometry measurements were higher (P = 0.046). Bland–Altman plots show good agreement between GAT, Tonopen XL, and I-care pro. GAT and Schiotz tonometry show less agreement, with large variations in the differences of measured IOP.Conclusions:IOP measurements in post-DSEK patients showed good agreement between GAT and either Tonopen XL or I-care pro. Schiotz tonometer has large variations in this patient group. IOP measurements and IOP difference between devices were not dependent on central corneal thickness.

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Correlation Between Dynamic Contour Tonometry, Uncorrected and Corrected Goldmann Applanation Tonometry, and Stage of Glaucoma

Cited by 14 publications

References 45 publications

Glaucoma vs. Biomechanical Properties of Cornea

Glaucoma vs. Biomechanical Properties of Cornea

Comparison between dynamic contour tonometry and Goldmann applanation tonometry correcting equations

Comparison of intraocular pressure measurements using Goldmann tonometer, I-care pro, Tonopen XL, and Schiotz tonometer in patients after Descemet stripping endothelial keratoplasty

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