Influence of corneal parameters in keratoconus on IOP readings obtained with different tonometers

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dc.authoridBozgul, Pembegul/0000-0002-9427-3610;
dc.authorwosidorman, gözde/JEP-3740-2023
dc.authorwosidBozgul, Pembegul/AAQ-4951-2020
dc.authorwosidORMAN, GÖZDE/HNQ-4152-2023
dc.contributor.authorFirat, Penpe Gul
dc.contributor.authorOrman, Gozde
dc.contributor.authorDoganay, Selim
dc.contributor.authorDemirel, Soner
dc.date.accessioned2024-08-04T20:37:35Z
dc.date.available2024-08-04T20:37:35Z
dc.date.issued2013
dc.departmentİnönü Üniversitesien_US
dc.description.abstractBackground Accurate intraocular pressure (IOP) measurement is important but of unsure reliability in patients with keratoconus. Different types and models of tonometers are available. This study investigated the influence of corneal parameters on IOP readings obtained by a Goldmann applanation tonometer, a non-contact tonometer and a dynamic contour tonometer. Methods IOP readings with the Goldmann applanation, non-contact and dynamic contour tonometers were obtained from 52 patients with keratoconus and from 50 normal subjects and their corneal parameters were measured using a Pentacam. Results The mean IOP measurements in keratoconus obtained with the Goldmann applanation, non-contact and dynamic contour tonometers were statistically significantly different from the mean IOP measurements in the normal subjects (p < 0.0001; p < 0.005; p < 0.0001, respectively). In the keratoconus group, the thinnest corneal thickness (TCT), steepest keratometry, the corneal curvature (CC), central corneal thickness (CCT) and the posterior corneal curvature (PCC) had a significant effect on the Goldmann applanation and non-contact tonometers but not on the dynamic contour tonometer. In the control group, thinnest and central corneal thicknesses had a significant effect on findings with the Goldmann and non-contact tonometers but not on the dynamic contour tonometer. The corneal volume (CV) had no significant effect on the three tonometers in both groups. Conclusions The corneal parameters affecting the IOP readings of the Goldmann applanation tonometers, non-contact tonometers and the dynamic contour tonometers are not the same. While the Goldmann applanation and non-contact tonometers were significantly affected by the corneal parameters that were measured, the dynamic contour tonometer was not affected by any of these corneal parameters.en_US
dc.identifier.doi10.1111/cxo.12016
dc.identifier.endpage237en_US
dc.identifier.issn0816-4622
dc.identifier.issn1444-0938
dc.identifier.issue2en_US
dc.identifier.pmid23320621en_US
dc.identifier.scopus2-s2.0-84877920472en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage233en_US
dc.identifier.urihttps://doi.org/10.1111/cxo.12016
dc.identifier.urihttps://hdl.handle.net/11616/96062
dc.identifier.volume96en_US
dc.identifier.wosWOS:000316412800015en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherTaylor & Francis Ltden_US
dc.relation.ispartofClinical and Experimental Optometryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectcorneaen_US
dc.subjectdynamic contour tonometeren_US
dc.subjectGoldmann applanation tonometeren_US
dc.subjectintraocular pressureen_US
dc.subjectnon-contact tonometeren_US
dc.titleInfluence of corneal parameters in keratoconus on IOP readings obtained with different tonometersen_US
dc.typeArticleen_US

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