Intraocular pressure profile during the modified diurnal tension curve using Goldman applanation tonometry and dynamic contour tonometryReport as inadecuate




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Journal of Ocular Biology, Diseases, and Informatics

, Volume 2, Issue 1, pp 29–32

First Online: 24 February 2009Received: 15 July 2008Accepted: 03 February 2009

Abstract

The aim of this study was to compare the intraocular pressure IOP profile during the modified diurnal tension curve mDTC using Goldman applanation tonometry GAT and dynamic contour tonometry DCT in treated glaucomatous eyes.
Eligible subjects were submitted to the mDTC using GAT and DCT in this sequence.
IOP measurements were performed at 8 a.m., 10 a.m., 2 p.m., and 4 p.m

Central corneal thickness was measured using ultrasound pachymetry in the morning.
Statistical analysis was performed using paired Student’s t test and Bland–Altman plot.
The mean difference between DCT and GAT measurements was 0.9 mmHg.
The mean ± SD IOP measurements during the mDTC were 19.68 ± 4.68, 17.63 ± 4.44, 17.25 ± 5.41, and 17.32 ± 4.25 mmHg using GAT and 19.97 ± 4.75, 18.79 ± 4.61, 19.53 ± 5.30, and 19.43 ± 5.45 mmHg using DCT.
IOP measurements were higher in the morning 8 a.m.
and decreased throughout the day using both tonometers.
The difference between IOP measurements using GAT and DCT was smaller in the morning and increased throughout the day.
The IOP variability using GAT was higher than using DCT.
Corneal biomechanical properties might help explain our findings.

KeywordsGlaucoma Corneal biomechanics Intraocular pressure Dynamic contour tonometry Tension curves Poster presented during the 2008 ARVO Meeting in Fort Lauderdale, FL, USA.

Financial disclosureThe authors have no financial interest in this article.

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Author: Carlos Gustavo Vasconcelos de Moraes - Alexandre Soares Castro Reis - Milena Eimi Sano - Alan Kardec Barreira - Roberto M

Source: https://link.springer.com/



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