Advertisement
< Vol. 20 Issue 5 | Sep-Oct 2010 | pp. 811 - 969

Comparison of central corneal thickness measurements using Pentacam and ultrasonic pachymetry in post-LASIK eyes for myopia

Abstract

Purpose. To compare central corneal thickness (CCT) measurements obtained using the Pentacam Scheimpflug system with those obtained using DGH ultrasound pachymetry (UP) in post-laser in situ keratomileusis (LASIK) eyes for myopia.
Methods. In a prospective study, measurement agreement was assessed in 143 eyes of 72 post-LASIK patients using both the Pentacam and UP at the Eye Consultants Center in Riyadh, Saudi Arabia.
Results. The mean CCT was 522±42.2 μm with the Oculus Pentacam and 516.2±40.6 μm with UP. The Bland-Altman plot showed that the mean ± SD for the differences between the 2 devices was 5.8±13.6 μm, with 95% confidence interval limits ranging from 20.9 μm to 32.6 μm. A test of statistical significance indicated that the mean differences of 5.8±13.6 μm differed significantly from zero (p>0.001; Wilcoxon signed-rank test), thus indicating that the Pentacam measurements tended to overestimate CCT compared with UP. Analysis of regression showed a high correlation between the values obtained with both devices (r=0.947, p>0.001).
Conclusions. In post-LASIK myopic eyes, although a high correlation has been shown between Pentacam and UP measurements, Pentacam tends to overestimate CCT compared to UP. Pentacam probably cannot be used interchangeably with UP in post-LASIK eyes for myopia.

Eur J Ophthalmol 2010; 20(5): 852 - 857

Article Type: ORIGINAL RESEARCH ARTICLE

Authors

Hani S. Al-Mezaine, Saleh A. Al-Amro, Dustan Kangave, Saleh Al-Obeidan, Khaled M. Al-Jubair

Article History

  • • Available online on 3/11/2010
  • • Published in print on 7/23/2010

This article is available as full text PDF.

  • If you are a Subscriber, please log in now.

  • Article price: Eur 36.00
  • You will be granted access to the article for 72 hours and you will be able to download any format (PDF or ePUB). The article will be available in your login area under "My PayPerView". You will need to register a new account (unless you already own an account with this journal), and you will be guided through our online shop. Online purchases are paid by Credit Card through PayPal.
  • If you are not a Subscriber you may:
  • Subscribe to this journal
  • Unlimited access to all our archives, 24 hour a day, every day of the week.

Authors

  • Al-Mezaine, Hani S. [PubMed] [Google Scholar]
    Department of Ophthalmology, College of Medicine, King Saud University, Riyadh - Saudi Arabia
  • Al-Amro, Saleh A. [PubMed] [Google Scholar]
    Department of Ophthalmology, College of Medicine, King Saud University, Riyadh - Saudi Arabia
  • Kangave, Dustan [PubMed] [Google Scholar]
    Research Department, College of Medicine, King Saud University, Riyadh - Saudi Arabia
  • Al-Obeidan, Saleh [PubMed] [Google Scholar]
    Department of Ophthalmology, College of Medicine, King Saud University, Riyadh - Saudi Arabia
  • Al-Jubair, Khaled M. [PubMed] [Google Scholar]
    Department of Ophthalmology, National Guard Hospital, Riyadh - Saudi Arabia

Article usage statistics

The blue line displays unique views in the time frame indicated.
The yellow line displays unique downloads.
Views and downloads are counted only once per session.

No supplementary material is available for this article.