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Agreement between central corneal thickness measured using pentacam, ultrasound pachymetry, specular microscopy and optic biometer lenstar LS 900 and the influence of intraocular pressure

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Borrego Sanz, Lara and Saenz Frances, Federico and Bermudez Vallecilla, M. C. and Morales Fernández, Laura and Martinez de la Casa, Jose Maria and Santos Bueso, Enrique and Jañez Escalada, Luis and García Feijoo, Julián (2014) Agreement between central corneal thickness measured using pentacam, ultrasound pachymetry, specular microscopy and optic biometer lenstar LS 900 and the influence of intraocular pressure. Ophthalmologica, 231 (4). pp. 226-235. ISSN 0030-3755

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Official URL: http://dx.doi.org/10.1159/000356724



Abstract

Purpose: To compare central corneal thickness (CCT) values obtained by Lenstar (LE), Pentacam (PC), specular microscopy (SM) and ultrasound pachymetry (UP) in healthy corneas and study their influence on intraocular pressure (IOP) readings determined by Goldmann applanation tonometry (GAT). Methods: CCT was measured in 76 healthy subjects by LE, PC, SM and UP. We established Lin's concordance correlation coefficient (ρ-C) between different techniques. The influence of CCT on GAT was established through univariate linear regression models, IOP being the dependent variable. Results: The highest ρ-C was found between LE and SM at 0.94 (95% CI: 0.91-0.96) and between LE and UP at 0.95 (95% CI: 0.94-0.97). IOP readings showed less variability when CCT was determined using LE (7.7%, B = 0.16; 95% CI: 0.004-0.28). Conclusions: Although CCT values obtained with UP, PC, SM and LE show good correlation, these methods are not completely interchangeable. The amount of IOP variation differs when CCT is determined using LE or SM.


Item Type:Article
Additional Information:

Received: March 26, 2013 / Accepted after revision: September 20, 2013 / Published online: March 13, 2014

Uncontrolled Keywords:Central corneal thickness; Intraocular pressure; Lenstar; Specular microscopy
Subjects:Medical sciences > Medicine > Ophtalmology
Medical sciences > Optics > Contact lenses
Medical sciences > Optics > Visual perception
ID Code:40863
Deposited On:20 Jan 2017 11:58
Last Modified:20 Jan 2017 11:58

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