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Comparison of Goldmann applanation tonometry and dynamic contour tonometry in healthy and glaucomatous eyes.
Eye (Lond) 2009; 23(2):262-9E

Abstract

PURPOSE

To compare the measurements of intraocular pressure (IOP) with dynamic contour tonometry (DCT) and Goldmann applanation tonometry (GAT) in healthy and glaucomatous eyes and to evaluate the influence of corneal thickness (CCT), corneal curvature (CC), axial length (AL), and age on these tonometric alternatives.

METHODS

Three hundred eyes of 100 healthy subjects, 100 patients with primary open angle glaucoma, and 100 patients with primary angle-closure glaucoma underwent IOP evaluation with DCT and GAT, and measurements of CCT, CC, and AL. Bland-Altman plots were used to evaluate the agreement between tonometers. Regression analysis was used to evaluate the influence of ocular structural factors on IOP measurements obtained with both tonometers.

RESULTS

Bland-Altman plots indicated that the 95% limits of agreement between tonometers were -1.4 to 6.6 mmHg. DCT values measured 2.6+/-1.9 mmHg higher than GAT readings (P<0.001). The mean IOP difference between DCT and GAT (DeltaIOP) was higher in healthy than in glaucomatous eyes and the magnitude of difference increased with increasing CCT. A significant reduction of DeltaIOP with an increase in both CCT (P<0.001) and IOP values (P<0.001) was found. Regression analysis showed no effect of CC, AL, and age on both DCT and GAT readings. In contrast to GAT (P<0.001), DCT measurements were not influenced by CCT (P=0.43).

CONCLUSIONS

IOP readings obtained by DCT were higher and less affected by CCT than those by GAT. The DeltaIOP was higher in healthy than in glaucomatous eyes and decreased in relation to increased CCT and IOP values.

Authors+Show Affiliations

Department of Neurological and Visual Sciences, University of Verona, Italy. pierre77@libero.itNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Evaluation Studies
Journal Article

Language

eng

PubMed ID

18219335

Citation

Ceruti, P, et al. "Comparison of Goldmann Applanation Tonometry and Dynamic Contour Tonometry in Healthy and Glaucomatous Eyes." Eye (London, England), vol. 23, no. 2, 2009, pp. 262-9.
Ceruti P, Morbio R, Marraffa M, et al. Comparison of Goldmann applanation tonometry and dynamic contour tonometry in healthy and glaucomatous eyes. Eye (Lond). 2009;23(2):262-9.
Ceruti, P., Morbio, R., Marraffa, M., & Marchini, G. (2009). Comparison of Goldmann applanation tonometry and dynamic contour tonometry in healthy and glaucomatous eyes. Eye (London, England), 23(2), pp. 262-9. doi:10.1038/sj.eye.6703102.
Ceruti P, et al. Comparison of Goldmann Applanation Tonometry and Dynamic Contour Tonometry in Healthy and Glaucomatous Eyes. Eye (Lond). 2009;23(2):262-9. PubMed PMID: 18219335.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison of Goldmann applanation tonometry and dynamic contour tonometry in healthy and glaucomatous eyes. AU - Ceruti,P, AU - Morbio,R, AU - Marraffa,M, AU - Marchini,G, Y1 - 2008/01/25/ PY - 2008/1/26/pubmed PY - 2010/1/8/medline PY - 2008/1/26/entrez SP - 262 EP - 9 JF - Eye (London, England) JO - Eye (Lond) VL - 23 IS - 2 N2 - PURPOSE: To compare the measurements of intraocular pressure (IOP) with dynamic contour tonometry (DCT) and Goldmann applanation tonometry (GAT) in healthy and glaucomatous eyes and to evaluate the influence of corneal thickness (CCT), corneal curvature (CC), axial length (AL), and age on these tonometric alternatives. METHODS: Three hundred eyes of 100 healthy subjects, 100 patients with primary open angle glaucoma, and 100 patients with primary angle-closure glaucoma underwent IOP evaluation with DCT and GAT, and measurements of CCT, CC, and AL. Bland-Altman plots were used to evaluate the agreement between tonometers. Regression analysis was used to evaluate the influence of ocular structural factors on IOP measurements obtained with both tonometers. RESULTS: Bland-Altman plots indicated that the 95% limits of agreement between tonometers were -1.4 to 6.6 mmHg. DCT values measured 2.6+/-1.9 mmHg higher than GAT readings (P<0.001). The mean IOP difference between DCT and GAT (DeltaIOP) was higher in healthy than in glaucomatous eyes and the magnitude of difference increased with increasing CCT. A significant reduction of DeltaIOP with an increase in both CCT (P<0.001) and IOP values (P<0.001) was found. Regression analysis showed no effect of CC, AL, and age on both DCT and GAT readings. In contrast to GAT (P<0.001), DCT measurements were not influenced by CCT (P=0.43). CONCLUSIONS: IOP readings obtained by DCT were higher and less affected by CCT than those by GAT. The DeltaIOP was higher in healthy than in glaucomatous eyes and decreased in relation to increased CCT and IOP values. SN - 1476-5454 UR - https://www.unboundmedicine.com/medline/citation/18219335/Comparison_of_Goldmann_applanation_tonometry_and_dynamic_contour_tonometry_in_healthy_and_glaucomatous_eyes_ L2 - http://dx.doi.org/10.1038/sj.eye.6703102 DB - PRIME DP - Unbound Medicine ER -