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Journal of Ophthalmology
Volume 2017, Article ID 2149145, 9 pages
https://doi.org/10.1155/2017/2149145
Research Article

Corneal Topographic and Aberrometric Measurements Obtained with a Multidiagnostic Device in Healthy Eyes: Intrasession Repeatability

1Group of Optics and Visual Perception, Department of Optics, Pharmacology and Anatomy, University of Alicante, Alicante, Spain
2Optometry Clinic, Prevention Service of the University of Alicante, Alicante, Spain

Correspondence should be addressed to David P. Piñero; se.au@oreynip.divad

Received 1 September 2016; Revised 10 November 2016; Accepted 5 December 2016; Published 4 January 2017

Academic Editor: Marco Lombardo

Copyright © 2017 David P. Piñero et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose. To evaluate the intrasession repeatability of corneal curvature, eccentricity, and aberrometric measurements obtained with a multidiagnostic device in healthy eyes. Methods. This study enrolled 107 eyes of 107 patients ranging in age from 23 to 65 years. All of them underwent a complete anterior segment examination with the VX120 system (Visionix-Luneau Technologies, Chartres, France). Three consecutive measurements were obtained. The within-subject standard deviation (), intrasubject precision (), and intraclass correlation coefficient (ICC) were calculated. Results. All for corneal power measurements were below 0.26 D, with ICC above 0.982. The for corneal astigmatism at different areas (3, 5, and 7 mm) was below 0.21 D, with ICC above 0.913. Concerning the axis of astigmatism, its was below 11.27°, with ICC above 0.975. The and ICC for corneal eccentricity were 0.067 and 0.957, respectively. The and ICC for high-order aberration root mean square (RMS) were 0.048 µm and 0.901, respectively. For 3rd- and 4th-order aberrometric parameters, all were below 0.037 µm and all ICC were higher than 0.84, except for quadrafoil RMS (ICC: 0.689). Conclusions. The multidiagnostic device evaluated is able to provide consistent measurements of corneal power, eccentricity, and third- and fourth-order aberrations in healthy eyes.