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Comparison of dynamic contour tonometry and goldmann applanation tonometry in deep lamellar and penetrating keratoplasties.
Am J Ophthalmol 2008; 145(2):215-221AJ

Abstract

PURPOSE

To compare the measurements of intraocular pressure (IOP) with dynamic contour tonometry (DCT) and Goldmann applanation tonometry (GAT) in eyes with corneal graft and to evaluate the influence of corneal thickness (CCT), corneal curvature (CC), and astigmatism on these methods.

DESIGN

Prospective, observational cross-sectional study.

METHODS

Eighteen eyes of 18 patients after penetrating keratoplasty (PKP) and 14 eyes of 14 patients after deep lamellar keratoplasty (DLKP) underwent IOP evaluation with DCT and GAT, and measurements of CCT, CC, and astigmatism. Bland-Altman plots were used to evaluate the agreement between tonometers. Multivariate regression analysis was used to evaluate the influence of ocular structural factors and running suture on IOP measurements obtained with both tonometers.

RESULTS

IOP values obtained by DCT and GAT were strongly correlated in all eyes (r = .91; P < .001). DCT values measured 2.5 +/- 1.7 mm Hg higher than GAT readings (P < .001). A reduction of the mean IOP difference between DCT and GAT with an increase in IOP values (P < .001) was found. Regression analysis showed no effect of CCT, CC, astigmatism, and running suture on both DCT and GAT readings, either in DLKP or in PKP eyes.

CONCLUSIONS

We found a good overall correlation between both tonometers but the agreement between instruments differs in high or low IOP ranges. The wide and varying 95% limits of agreement between DCT and GAT indicates that DCT provides IOP measurements on deep lamellar and penetrating keratoplasties which can be used in the clinical practice.

Authors+Show Affiliations

Eye Clinic, Department of Neurological and Visual Sciences, University of Verona, Borgo Trento Hospital, Piazzale Stefani 1, Verona, Italy. pierre77@libero.itNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

18222191

Citation

Ceruti, Piero, et al. "Comparison of Dynamic Contour Tonometry and Goldmann Applanation Tonometry in Deep Lamellar and Penetrating Keratoplasties." American Journal of Ophthalmology, vol. 145, no. 2, 2008, pp. 215-221.
Ceruti P, Morbio R, Marraffa M, et al. Comparison of dynamic contour tonometry and goldmann applanation tonometry in deep lamellar and penetrating keratoplasties. Am J Ophthalmol. 2008;145(2):215-221.
Ceruti, P., Morbio, R., Marraffa, M., & Marchini, G. (2008). Comparison of dynamic contour tonometry and goldmann applanation tonometry in deep lamellar and penetrating keratoplasties. American Journal of Ophthalmology, 145(2), pp. 215-221. doi:10.1016/j.ajo.2007.10.003.
Ceruti P, et al. Comparison of Dynamic Contour Tonometry and Goldmann Applanation Tonometry in Deep Lamellar and Penetrating Keratoplasties. Am J Ophthalmol. 2008;145(2):215-221. PubMed PMID: 18222191.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison of dynamic contour tonometry and goldmann applanation tonometry in deep lamellar and penetrating keratoplasties. AU - Ceruti,Piero, AU - Morbio,Roberta, AU - Marraffa,Michele, AU - Marchini,Giorgio, PY - 2007/08/07/received PY - 2007/09/26/revised PY - 2007/10/02/accepted PY - 2008/1/29/pubmed PY - 2008/3/21/medline PY - 2008/1/29/entrez SP - 215 EP - 221 JF - American journal of ophthalmology JO - Am. J. Ophthalmol. VL - 145 IS - 2 N2 - PURPOSE: To compare the measurements of intraocular pressure (IOP) with dynamic contour tonometry (DCT) and Goldmann applanation tonometry (GAT) in eyes with corneal graft and to evaluate the influence of corneal thickness (CCT), corneal curvature (CC), and astigmatism on these methods. DESIGN: Prospective, observational cross-sectional study. METHODS: Eighteen eyes of 18 patients after penetrating keratoplasty (PKP) and 14 eyes of 14 patients after deep lamellar keratoplasty (DLKP) underwent IOP evaluation with DCT and GAT, and measurements of CCT, CC, and astigmatism. Bland-Altman plots were used to evaluate the agreement between tonometers. Multivariate regression analysis was used to evaluate the influence of ocular structural factors and running suture on IOP measurements obtained with both tonometers. RESULTS: IOP values obtained by DCT and GAT were strongly correlated in all eyes (r = .91; P < .001). DCT values measured 2.5 +/- 1.7 mm Hg higher than GAT readings (P < .001). A reduction of the mean IOP difference between DCT and GAT with an increase in IOP values (P < .001) was found. Regression analysis showed no effect of CCT, CC, astigmatism, and running suture on both DCT and GAT readings, either in DLKP or in PKP eyes. CONCLUSIONS: We found a good overall correlation between both tonometers but the agreement between instruments differs in high or low IOP ranges. The wide and varying 95% limits of agreement between DCT and GAT indicates that DCT provides IOP measurements on deep lamellar and penetrating keratoplasties which can be used in the clinical practice. SN - 0002-9394 UR - https://www.unboundmedicine.com/medline/citation/18222191/Comparison_of_dynamic_contour_tonometry_and_goldmann_applanation_tonometry_in_deep_lamellar_and_penetrating_keratoplasties_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0002-9394(07)00880-X DB - PRIME DP - Unbound Medicine ER -