May 2006
Volume 47, Issue 13
Free
ARVO Annual Meeting Abstract  |   May 2006
The Influence of Central Corneal Thickness and Corneal Curvature on Intraocular Pressure Measured by Different Tonometers; Non–Contact and Goldmann Applanation Tonometers
Author Affiliations & Notes
  • Y. Harada
    Ophthalmology, University of Occupational and Environmental Health, Kitakyushu, Japan
  • N. Hirose
    Sakka Eye Clinic, Kitakyushu, Japan
  • T. Kubota
    Ophthalmology, University of Occupational and Environmental Health, Kitakyushu, Japan
  • A. Tawara
    Ophthalmology, University of Occupational and Environmental Health, Kitakyushu, Japan
  • Footnotes
    Commercial Relationships  Y. Harada, None; N. Hirose, None; T. Kubota, None; A. Tawara, None.
  • Footnotes
    Support  None
Investigative Ophthalmology & Visual Science May 2006, Vol.47, 4457. doi:
  • Views
  • Share
  • Tools
    • Alerts
      ×
      This feature is available to authenticated users only.
      Sign In or Create an Account ×
    • Get Citation

      Y. Harada, N. Hirose, T. Kubota, A. Tawara; The Influence of Central Corneal Thickness and Corneal Curvature on Intraocular Pressure Measured by Different Tonometers; Non–Contact and Goldmann Applanation Tonometers . Invest. Ophthalmol. Vis. Sci. 2006;47(13):4457.

      Download citation file:


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

      ×
  • Supplements
Abstract

Purpose: : To examine whether central corneal thickness and corneal curvature have an influence on an intraocular pressure (IOP) value measured by non–contact tonometer (NCT) and Goldmann applanation tonometer (GAT).

Methods: : Ninety two eyes from 92 patients without a history of intraocular operation were included in the present study. They comprised of 19 primary open angle glaucoma, 7 normal–tension glaucoma, 6 chronic angle–closure glaucoma, 10 ocular hypertension, and 50 non–glaucoma eyes. We measured IOP using NCT and GAT, and calculated a difference of IOP value between the two methods (NCT–GAT). We examined relations between the IOP value and central corneal thickness and radius of corneal curvature using linear regression line. The same examiner measured corneal curvature radius, IOP using NCT and GAT and central corneal thickness. Right eyes were used for statistical examination.

Results: : Central corneal thickness significantly correlated with IOP measured by NCT (r=0.507, p<0.0001) and that measured by GAT (r=0.233, p<0.05). Corneal curvature radius significantly correlated with IOP measured by GAT (r=–0.239, p<0.05), however not significantly correlated with that measured with NCT (r=–0.099, p=0.3457). There was significant correlation between central corneal thickness and IOP value of (NCT–GAT) (r =0.663, p <0.0001), and significant correlation between corneal curvature radius and IOP value of (NCT–GAT) (r =0.214, p<0.05).

Conclusions: : The difference of IOP value between NCT and GAT significantly correlated with central corneal thickness and corneal curvature radius.

Keywords: intraocular pressure • cornea: clinical science 
×
×

This PDF is available to Subscribers Only

Sign in or purchase a subscription to access this content. ×

You must be signed into an individual account to use this feature.

×