Evaluation of pachymetric measurements with scheimpflug photography-based system and optical coherence tomography pachymetry at different stages of keratoconus.

Betül İlkay Sezgin Akçay,Ercüment Bozkurt,Tuğba Kurt,Jülide Canan Umurhan Akkan,Engin Bilge Özgürhan,Aydın Yıldırım,Yusuf Yıldırım,Ahmet Demirok,Mediha Gülen Coşar

doi:10.1155/2014/719205

Abstract

The aim of this study was to compare the central and peripheral pachymetric measurements determined with Sirius system and Visante OCT and evaluate the agreement between them at different stages of keratoconus. Measurements were not significantly different in all patients and subgroups and showed high correlation for the corneal thicknesses of the entire cornea in different stages of keratoconus.

Highlights

IntroductionKeratoconus is a noninflammatory disorder of the cornea, characterized by the ectasia of the central or paracentral region leading to corneal thinning and surface distortion
The aim of this study was to compare the central and peripheral pachymetric measurements determined with Sirius system and Visante optical coherence tomography (OCT) and evaluate the agreement between them at different stages of keratoconus
Keratoconus is a noninflammatory disorder of the cornea, characterized by the ectasia of the central or paracentral region leading to corneal thinning and surface distortion

Summary

Introduction

Keratoconus is a noninflammatory disorder of the cornea, characterized by the ectasia of the central or paracentral region leading to corneal thinning and surface distortion. The disease is usually bilateral and has its onset at puberty [1]. Progressive corneal steepening, usually at the inferior to the center of the cornea, leads to myopia and irregular astigmatism at early stages and hydrops and corneal scarring in the later stages of the disease. The most notable feature of keratoconus is the central and paracentral ectasia, recent studies have revealed that midperipheral portion of the cornea is effected [2]. Patients use of imaging systems has been important in screening and follow-up. Serial measurements of corneal thickness with topography are important for assessment of progression [3]

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