Concordancia entre la tonometría de aplanación de Goldmann y la tonometría de contorno dinámico: efectos de la morfometría corneal

Sáenz-Francés, F.; García-Catalán, R.; Jerez-Fidalgo, M.; Fernandez-Vidal, Ana; Martínez-de-la-Casa, J.M.; Méndez-Hernández, Carmen; Santos-Bueso, E.; Reche-Frutos, J; García–Sánchez, J.; García‐Feijoó, Julián

doi:10.1016/j.oftal.2011.04.012

Cited by 6 publications

(4 citation statements)

References 22 publications

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“…Doyle and Lachkar28 reported a study showing that individuals with normal or high central corneal thickness had similar IOP values on GAT and DCT, and that IOP values for a thin cornea tended to show a higher discrepancy between the two measurements, possibly due to underestimation of IOP by the Goldmann tonometer. DCT measurements tend to be less influenced by central corneal thickness than measurements obtained on GAT,27,28,34,35 especially in individuals with thin corneas.…”

Section: Discussionmentioning

confidence: 80%

Correlation between ocular perfusion pressure and ocular pulse amplitude in glaucoma, ocular hypertension, and normal eyes

Figueiredo

Cronemberger

Kanadani³

2013

OPTH

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BackgroundThe purpose of this study was to investigate the correlation between ocular perfusion pressure and ocular pulse amplitude in glaucoma, ocular hypertension, and normal eyes.MethodsNinety eyes from 90 patients were included. Thirty patients had been recently diagnosed with glaucoma and had no previous history of treatment for ocular hypotension, 30 had elevated intraocular pressure (IOP) without evidence of glaucoma, and 30 had normal IOP (<21 mmHg) with no detectable glaucomatous damage. Goldmann applanation tonometry (GAT), dynamic contour tonometry (DCT), blood pressure measurement, pachymetry, Humphrey visual field, and routine ophthalmic examination was performed in each patient. Ocular perfusion pressure was calculated as the difference between mean arterial pressure and IOP. The ocular pulse amplitude was given by DCT. The Pearson correlation coefficient was used to compare the glaucomatous and ocular hypertensive groups, and comparisons with the normal IOP group were done using the Spearman’s rank correlation coefficient.ResultsMean IOP by DCT was 22.7 ± 4.3 mmHg in the glaucoma group, 22.3 ± 2.8 mmHg in the ocular hypertension group, and 14.3 ± 1.6 mmHg in the control group. Mean IOP by GAT was 19.0 ± 5.1 mmHg for glaucoma, 22.4 ± 2.1 mmHg for ocular hypertension, and 12.9 ± 2.2 mmHg for controls. Mean ocular pulse amplitude was 3.4 ± 1.2 mmHg in the glaucoma group, 3.5 ± 1.2 mmHg in the ocular hypertension group, and 2.6 ± 0.9 mmHg in the control group. Mean ocular perfusion pressure was 46.3 ± 7.9 mmHg in the glaucoma group, 46.3 ± 7.9 mmHg in the ocular hypertension group, and 50.2 ± 7.0 mmHg in controls. No significant correlation between ocular perfusion pressure and ocular pulse amplitude was found in any of the groups (P = 0.865 and r = −0.032, P = 0.403 and r = −0.156, P = 0.082 and ρ = −0.307 for glaucoma, ocular hypertension, and normal eyes, respectively).ConclusionThere is no significant correlation between ocular perfusion pressure and ocular pulse amplitude values in glaucoma, ocular hypertension, or normal eyes. IOP values measured by GAT correlate with those measured by DCT.

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Section: Discussionmentioning

confidence: 80%

Correlation between ocular perfusion pressure and ocular pulse amplitude in glaucoma, ocular hypertension, and normal eyes

Figueiredo

Cronemberger

Kanadani³

2013

OPTH

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“…There are numerous systems to measure IOP. Among them, Goldman applanation tonometry (GAT) is still considered the gold standard although it is well-known that the IOP readings that this system yields are dependent on the corneal biomechanical properties of the eye under assessment, and particularly on the central corneal thickness (CCT), the corneal curvature and potential corneal surface irregularities [2,3]. Moreover, the advent of refractive surgery aroused even more the interest in this discussion, since due to the changes undergone by the corneal structure as a result of the surgical procedure it has been demonstrated that post-operative IOP is underestimated when using GAT as measuring technique, which can lead to an erroneous assessment (false negatives).…”

Section: -Introductionmentioning

confidence: 99%

“…DCT's IOP readings are less affected by CCT variations that those obtained with other tonometers [2,3,10,11,[14][15][16][17][18][19][20][21][22].…”

Section: -Introductionmentioning

confidence: 99%

Dynamic contour tonometry vs. non-contact tonometry and their relation with corneal thickness

Briceño

Mas

Domenech

2016

Optik

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The purpose of this study is to evaluate the concordance between intraocular pressure (IOP) values obtained with a dynamic contour tonometer (DCT) and a non-contact tonometer (NCT) in healthy patients and to investigate the effect of central corneal thickness (CCT) on IOP readings for each of the two measuring systems. The mean IOP yielded by DCT, NCT and corrected non-contact tonometer (CNCT) was 17.1 mmHg, 15.5 mmHg and 12.2 mmHg, respectively. The average CCT was 563.6 μm and the ocular pulse amplitude (OPA) was 2.8 mmHg. There was a moderate correlation between CCT and CNCT (r = 0.34, p = 0.001), a weak correlation between CCT and DCT (r = 0.03 p = 0.788) and a weak-to-moderate correlation between CCT and NCT (r = 0.27, p = 0.11). The intra-class correlation coefficient (ICC) was 0.59 for the DCT-vs.-NCT comparison and 0.56 for DCT-vs.-CNCT. The mean difference between the two instruments (DCT / NCT) ranged from 1.62 to 4.47 mmHg. We have shown that non-contact tonometer is significantly more affected by the central corneal thickness than the dynamic contour tonometer and therefore these methods are not interchangeable.

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“…The influence of corneal thickness on IOP readings measured by conventional tonometry, Goldmann applanation tonometry (GAT), has been extensively studied, showing that CCT is one of the main sources of error of this tonometry system. For this reason, a wide variety of new instruments has been developed with the aim to overcome the limitations of the GAT results [4,5]. …”

Section: Introductionmentioning

confidence: 99%

Agreement between Central Corneal Thickness Measured Using Pentacam, Ultrasound Pachymetry, Specular Microscopy and Optic Biometer Lenstar LS 900 and the Influence of Intraocular Pressure

Borrego-Sanz

Sáenz-Francés²,

Bermúdez-Vallecilla³

et al. 2014

Ophthalmologica

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Purpose: To compare central corneal thickness (CCT) values obtained by Lenstar (LE), Pentacam (PC), specular microscopy (SM) and ultrasound pachymetry (UP) in healthy corneas and study their influence on intraocular pressure (IOP) readings determined by Goldmann applanation tonometry (GAT). Methods: CCT was measured in 76 healthy subjects by LE, PC, SM and UP. We established Lin's concordance correlation coefficient (ρ-C) between different techniques. The influence of CCT on GAT was established through univariate linear regression models, IOP being the dependent variable. Results: The highest ρ-C was found between LE and SM at 0.94 (95% CI: 0.91-0.96) and between LE and UP at 0.95 (95% CI: 0.94-0.97). IOP readings showed less variability when CCT was determined using LE (7.7%, B = 0.16; 95% CI: 0.004-0.28). Conclusions: Although CCT values obtained with UP, PC, SM and LE show good correlation, these methods are not completely interchangeable. The amount of IOP variation differs when CCT is determined using LE or SM.

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Concordancia entre la tonometría de aplanación de Goldmann y la tonometría de contorno dinámico: efectos de la morfometría corneal

Cited by 6 publications

References 22 publications

Correlation between ocular perfusion pressure and ocular pulse amplitude in glaucoma, ocular hypertension, and normal eyes

Correlation between ocular perfusion pressure and ocular pulse amplitude in glaucoma, ocular hypertension, and normal eyes

Dynamic contour tonometry vs. non-contact tonometry and their relation with corneal thickness

Agreement between Central Corneal Thickness Measured Using Pentacam, Ultrasound Pachymetry, Specular Microscopy and Optic Biometer Lenstar LS 900 and the Influence of Intraocular Pressure

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