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Corneal topographic and aberrometric measurements obtained with a multidiagnostic device in healthy eyes: intrasession repeatability

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Session Details

Session Title: Presented Poster Session: Glaucoma and Imaging

Venue: Poster Village: Pod 3

First Author: : V.Camps SPAIN

Co Author(s): :    D. Pinero   A. Lopez-Navarro   I. Cabezos   D. De Fez   M. Caballero  

Abstract Details

Purpose:

To evaluate the intrasession repeatability of corneal curvature, eccentricity and aberrometric measurements obtained with a multidiagnostic device in healthy eyes.

Setting:

University of Alicante

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 with this device to assess the intrasession repeatability of corneal power, eccentricity and aberrometric parameters. The within-subject standard deviation (Sw), intrasubject precision (1.96xSw) and intraclass correlation coefficient (ICC) were calculated.

Results:

Sw for corneal power measurements were below 0.26D (ICC=0.982). Sw for corneal astigmatism at different areas (3, 5 and 7 mm) was below 0.21D (ICC=0.913). Concerning the axis of astigmatism, its Sw was below 11.27º (ICC=0.975). Sw and ICC for corneal eccentricity were 0.067 and 0.957. Sw and ICC for HOAs RMS were 0.048 µm and 0.90. For 3rd and 4th order aberrometric parameters, Sw was below 0.037µm and all ICC were higher than 0.84, except for quadrafoil RMS (ICC:0.689). Weak to moderate correlations were found between the the aberrometric parameters evaluated and their Sw (r≥0.375, p<0.001).

Conclusions:

The multidiagnostic device evaluated is able to provide consistent measurements of corneal power, eccentricity, and third and fourth order aberrations in healthy eyes.

Financial Disclosure:

NONE

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