Document Detail

Comparison of central corneal thickness measurements using Pentacam and ultrasonic pachymetry in post-LASIK eyes for myopia.
MedLine Citation:
PMID:  20815096     Owner:  NLM     Status:  MEDLINE    
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 microm with the Oculus Pentacam and 516.2 +/- 40.6 microm with UP. The Bland-Altman plot showed that the mean +/- SD for the differences between the 2 devices was 5.8 +/- 13.6 microm, with 95% confidence interval limits ranging from -20.9 microm to 32.6 microm. A test of statistical significance indicated that the mean differences of 5.8 +/- 13.6 microm 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.
Hani S Al-Mezaine; Saleh A Al-Amro; Dustan Kangave; Saleh Al-Obeidan; Khaled M Al-Jubair
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  European journal of ophthalmology     Volume:  20     ISSN:  1724-6016     ISO Abbreviation:  Eur J Ophthalmol     Publication Date:    2010 Sep-Oct
Date Detail:
Created Date:  2010-09-02     Completed Date:  2010-10-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9110772     Medline TA:  Eur J Ophthalmol     Country:  Italy    
Other Details:
Languages:  eng     Pagination:  852-7     Citation Subset:  IM    
Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
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MeSH Terms
Body Weights and Measures
Cornea / pathology*
Diagnostic Techniques, Ophthalmological / instrumentation*
Keratomileusis, Laser In Situ*
Microscopy, Acoustic / methods
Myopia / surgery*
Photography / methods
Postoperative Period
Prospective Studies

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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