March 2012
Volume 53, Issue 14
Free
ARVO Annual Meeting Abstract  |   March 2012
Dynamic Contour Tonometry (DCT) compared with Goldmann Applanation Tonometry (GAT) in intraocular pressure measurement in patients with penetrating keratoplasty
Author Affiliations & Notes
  • Carmen Mendez-Hernandez
    Glaucoma,
    Hospital Clinico Universitario San Carlos, Madrid, Spain
  • Patricia Toro-Utrera
    Glaucoma,
    Hospital Clinico Universitario San Carlos, Madrid, Spain
  • Ana Fernandez-Vidal
    Glaucoma,
    Hospital Clinico Universitario San Carlos, Madrid, Spain
  • Federico Saenz-Frances
    Glaucoma,
    Hospital Clinico Universitario San Carlos, Madrid, Spain
  • David Diaz-Valle
    USIO,
    Hospital Clinico Universitario San Carlos, Madrid, Spain
  • Ricardo Cuiña-Sardiña
    USIO,
    Hospital Clinico Universitario San Carlos, Madrid, Spain
  • José María Martínez-de-la-Casa
    Glaucoma,
    Hospital Clinico Universitario San Carlos, Madrid, Spain
  • Enrique Santos-Bueso
    Glaucoma,
    Hospital Clinico Universitario San Carlos, Madrid, Spain
  • José Manuel Benítez-del-Castillo
    USIO,
    Hospital Clinico Universitario San Carlos, Madrid, Spain
  • Julián García-Feijoo
    Glaucoma,
    Hospital Clinico Universitario San Carlos, Madrid, Spain
  • Footnotes
    Commercial Relationships  Carmen Mendez-Hernandez, None; Patricia Toro-Utrera, None; Ana Fernandez-Vidal, None; Federico Saenz-Frances, None; David Diaz-Valle, None; Ricardo Cuiña-Sardiña, None; José María Martínez-de-la-Casa, None; Enrique Santos-Bueso, None; José Manuel Benítez-del-Castillo, None; Julián García-Feijoo, None
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science March 2012, Vol.53, 5054. doi:
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      Carmen Mendez-Hernandez, Patricia Toro-Utrera, Ana Fernandez-Vidal, Federico Saenz-Frances, David Diaz-Valle, Ricardo Cuiña-Sardiña, José María Martínez-de-la-Casa, Enrique Santos-Bueso, José Manuel Benítez-del-Castillo, Julián García-Feijoo; Dynamic Contour Tonometry (DCT) compared with Goldmann Applanation Tonometry (GAT) in intraocular pressure measurement in patients with penetrating keratoplasty. Invest. Ophthalmol. Vis. Sci. 2012;53(14):5054.

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

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Abstract

Purpose: : To compare Dynamic Contour tonometry (DCT) with Goldmann applanation tonometry (GAT) in post-keratoplasty corneas, and to assess the influence of central corneal thickness (CCT), corneal curvature (CC) and time after penetrating keratoplasty (PKP) on IOP measurement.

Methods: : This cross-sectional study included one eye of 53 post-penetrating keratoplasty patients. All subjects underwent GAT and DCT IOP measurements in random order, and CCT, CC and astigmatism evaluation. The Bland-Altman method and multivariate regression analysis were used to assess inter-tonometer agreement and the influence of CCT, and CC on IOP.

Results: : DCT significantly underestimated IOP compared with GAT (GAT minus DCT 6.67 ± 7.47 mmHg (95% C.I. 3.97 - 9.36)). In only 33 of the 53 patients IOP measurements with DCT were reliable whereas it was possible to measure IOP adequately with GAT in 49 of 53 patients. A significant relationship between the realibility of the IOP measurements with DCT and CC, the flattest corneal curvature axis (K1), was found.

Conclusions: : On the contrary to prior studies, DCT underestimated IOP compared with GAT. The low agreement found between GAT and DCT and the difficulties in obtaining IOP measures with DCT suggest lesser reliability than GAT in post-PKP patients.

Keywords: intraocular pressure • cornea: clinical science • cornea: clinical science 
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