Comparison of central corneal thickness measurement by scanning slit topography, infrared, and ultrasound pachymetry in normal and post-LASIK eyes.
Central corneal thickness
Infrared pachymetry
Optical pachymetry
Orbscan
Post-LASIK
Journal
International ophthalmology
ISSN: 1573-2630
Titre abrégé: Int Ophthalmol
Pays: Netherlands
ID NLM: 7904294
Informations de publication
Date de publication:
Nov 2020
Nov 2020
Historique:
received:
09
03
2020
accepted:
20
06
2020
pubmed:
4
7
2020
medline:
22
6
2021
entrez:
4
7
2020
Statut:
ppublish
Résumé
To compare central corneal thickness (CCT) measurements by scanning slit topography (SST), infrared pachymetry (IRP), and ultrasound pachymetry (USP), and their agreement in normal and post-laser in situ keratomileusis (LASIK) eyes. Sixty normal and 35 post-LASIK subjects were recruited. Only one eye from each subject was analyzed. Non-contact pachymetry was performed first, and the order for SST (Orbscan IIz) and IRP (Tonoref III) was randomized for each patient, to be followed by contact USP (Echoscan US-4000). Pearson's correlation, paired t test, and Bland-Altman plots were used to investigate association, difference, and agreement among different instruments respectively. The measurements obtained with the instruments were highly correlated. Compared to CCT determined by USP (CCT Central corneal thickness determined by SST, IRP and USP were not interchangeable or interconvertible, probably attributed to difference in methodologies. Compensation with algorithms may improve agreements amongst instruments.
Identifiants
pubmed: 32617805
doi: 10.1007/s10792-020-01475-5
pii: 10.1007/s10792-020-01475-5
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
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