September 2016
Volume 57, Issue 12
Open Access
ARVO Annual Meeting Abstract  |   September 2016
Comparison of intraocular pressure measurements in healthy subjects taken by rebound tonometry, dynamic contour tonometry and applanation tonometry at a hospital in Mexico City
Author Affiliations & Notes
  • Itzel Montserrat Perez Gudino
    Glaucoma , Asociación para Evitar la Ceguera en México, Mexico , Mexico
  • Mariana Escalante-Castañón
    Glaucoma , Asociación para Evitar la Ceguera en México, Mexico , Mexico
  • ALEJANDRA HERNANDEZ-OTEYZA
    Glaucoma , Asociación para Evitar la Ceguera en México, Mexico , Mexico
  • JESUS JIMENEZ-ARROYO
    Glaucoma , Asociación para Evitar la Ceguera en México, Mexico , Mexico
  • MAGDALENA GARCIA-HUERTA
    Glaucoma , Asociación para Evitar la Ceguera en México, Mexico , Mexico
  • Footnotes
    Commercial Relationships   Itzel Perez Gudino, None; Mariana Escalante-Castañón, None; ALEJANDRA HERNANDEZ-OTEYZA, None; JESUS JIMENEZ-ARROYO, None; MAGDALENA GARCIA-HUERTA, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science September 2016, Vol.57, 6440. doi:
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      Itzel Montserrat Perez Gudino, Mariana Escalante-Castañón, ALEJANDRA HERNANDEZ-OTEYZA, JESUS JIMENEZ-ARROYO, MAGDALENA GARCIA-HUERTA; Comparison of intraocular pressure measurements in healthy subjects taken by rebound tonometry, dynamic contour tonometry and applanation tonometry at a hospital in Mexico City. Invest. Ophthalmol. Vis. Sci. 2016;57(12):6440.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Purpose : To compare intraocular (IOP) measurements in healthy subjects taken by rebound tonometry (RT), dynamic contour tonometry (DCT) and Goldmann applanation tonometry (GAT) at a hospital in Mexico City, and to investigate the effect of the central corneal thickness on these measurements of IOP.

Methods : Fifty nine eyes of 59 healthy subjects were included in this cross-sectional study.
Eyes with corneal pathologies, ametropies greater than 3 D or 1.5 D of astigmatism, glaucoma suspects and former glaucoma diagnosis were excluded. IOP was measured three times with each tonometer on each subject always following the same order: ICare RT, Pascal DCT and GAT; ultrasound pachimetry was also measured 3 times. The agreement of measurements was statistically analysed by one way ANOVA with posthoc analysis (Turkey’s multiple comparisons test) and Pearson correlation coefficient and regression analysis.

Results : Mean IOP for all enrolled eyes was 16.23 ± 3.3 mmHg for ICare RT, 16.58 ± 2.29 mmHg for Pascal DCT and 13.22 ± 2.21 mm Hg for GAT. The ANOVA test showed a statistically significant difference between the 3 tonometers (p<0.0001); a posthoc test (Turkey’s multiple comparisons test) showed a statistically significant difference between GAT and ICare and between GAT and Pascal DCT, but not between ICare and DCT.

Conclusions : Both DCT and RT overestimate IOP compared to the gold standard GAT, but the measurements obtained by these two tonometers are comparable.

This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.

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