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Corneal parameters and difference between goldmann applanation tonometry and dynamic contour tonometry in normal eyes.
J Glaucoma 2008; 17(6):460-4JG

Abstract

PURPOSE

To compare the difference between 2 methods of measuring the intraocular pressure (IOP), namely, Goldmann applanation tonometry (GAT) and dynamic contour tonometry (DCT) and to study the relationship with the corneal parameters in patients with no glaucoma signs.

METHODS

One hundred and eighteen eyes of 118 healthy subjects from 20 to 77 years of age underwent IOP measurements with DCT and GAT, central corneal thickness, and corneal volume measurements with Pentacam Scheimpflug camera. Pentacam examination has been performed first, then DCT and, after 10 minutes, GAT measurements.

RESULTS

The measurements with GAT ranged between 11 and 22 mm Hg (m=15.49+/-2.43 mm Hg), the measurements with DCT ranged between 10.5 and 25.1 mm Hg (m=17.59+/-2.9 mm Hg). DCT showed a statistically significant (P<0.0001) higher IOP measurement compared with GAT. A relation between differences in IOP with central corneal thickness and corneal volume was found, whereas no relation was found with corneal radius and age.

CONCLUSIONS

Our results show a discrete correlation between GAT and DCT measurements, but DCT showed slightly higher values of IOP. If DCT should be considered the gold standard, higher values of IOP could still be considered normal. These 2 devices cannot to be used interchangeably.

Authors+Show Affiliations

Eye Department, Centro Grandi Apparecchiature, Second University of Naples, Naples, Italy.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18794680

Citation

Lanza, Michele, et al. "Corneal Parameters and Difference Between Goldmann Applanation Tonometry and Dynamic Contour Tonometry in Normal Eyes." Journal of Glaucoma, vol. 17, no. 6, 2008, pp. 460-4.
Lanza M, Borrelli M, De Bernardo M, et al. Corneal parameters and difference between goldmann applanation tonometry and dynamic contour tonometry in normal eyes. J Glaucoma. 2008;17(6):460-4.
Lanza, M., Borrelli, M., De Bernardo, M., Filosa, M. L., & Rosa, N. (2008). Corneal parameters and difference between goldmann applanation tonometry and dynamic contour tonometry in normal eyes. Journal of Glaucoma, 17(6), pp. 460-4. doi:10.1097/IJG.0b013e31816224bd.
Lanza M, et al. Corneal Parameters and Difference Between Goldmann Applanation Tonometry and Dynamic Contour Tonometry in Normal Eyes. J Glaucoma. 2008;17(6):460-4. PubMed PMID: 18794680.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Corneal parameters and difference between goldmann applanation tonometry and dynamic contour tonometry in normal eyes. AU - Lanza,Michele, AU - Borrelli,Maria, AU - De Bernardo,Maddalena, AU - Filosa,Maria Luisa, AU - Rosa,Nicola, PY - 2008/9/17/pubmed PY - 2008/12/17/medline PY - 2008/9/17/entrez SP - 460 EP - 4 JF - Journal of glaucoma JO - J. Glaucoma VL - 17 IS - 6 N2 - PURPOSE: To compare the difference between 2 methods of measuring the intraocular pressure (IOP), namely, Goldmann applanation tonometry (GAT) and dynamic contour tonometry (DCT) and to study the relationship with the corneal parameters in patients with no glaucoma signs. METHODS: One hundred and eighteen eyes of 118 healthy subjects from 20 to 77 years of age underwent IOP measurements with DCT and GAT, central corneal thickness, and corneal volume measurements with Pentacam Scheimpflug camera. Pentacam examination has been performed first, then DCT and, after 10 minutes, GAT measurements. RESULTS: The measurements with GAT ranged between 11 and 22 mm Hg (m=15.49+/-2.43 mm Hg), the measurements with DCT ranged between 10.5 and 25.1 mm Hg (m=17.59+/-2.9 mm Hg). DCT showed a statistically significant (P<0.0001) higher IOP measurement compared with GAT. A relation between differences in IOP with central corneal thickness and corneal volume was found, whereas no relation was found with corneal radius and age. CONCLUSIONS: Our results show a discrete correlation between GAT and DCT measurements, but DCT showed slightly higher values of IOP. If DCT should be considered the gold standard, higher values of IOP could still be considered normal. These 2 devices cannot to be used interchangeably. SN - 1536-481X UR - https://www.unboundmedicine.com/medline/citation/18794680/Corneal_parameters_and_difference_between_goldmann_applanation_tonometry_and_dynamic_contour_tonometry_in_normal_eyes_ L2 - http://Insights.ovid.com/pubmed?pmid=18794680 DB - PRIME DP - Unbound Medicine ER -