Its a topographer, ray-tracing wavefront aberrometer, autorefractor, keratometer and pupillometer all in one. Privacy | Terms & Conditions Ⓒ 2023 Beye, LLC. The iTrace Combo Visual Function Analyzer is a multifunctional instrument. Inclusion of advertising materials on the website thereof, does not constitute and representation or guarantee by Beye LLC of the quality of such products, or of the claims made. References made in article may indicate usage of medical equipment or drugs at dosages, for periods of time, and in combination not included in the current prescribing information.
Itrace topographer verification#
Although great care is taken to ensure that all information is accurate, it is recommended that readers seek independent verification of advice on drugs and other product usage, surgical techniques and clinical processes prior to their use. Beye LLC, via its Editors and Publisher, accepts no responsibility for any injury or damage to persons or property occasioned through the implementation of any ideas or use of any product described herein.
Itrace topographer professional#
The information contained on, including text, graphics, images, and interactive activities, is for informational purposes only, and is not intended to be a substitute for professional medical advice. The higher variability should be taken into account before performing any treatment.Ĭopyright 2016, SLACK Incorporated.This content is intended for health care professionals and providers only. Caution should be taken when interpreting the topographies of such patients. Threshold values of keratometric changes used to ascertain keratoconus progression should be carefully considered. Topographies performed in keratoconic eyes are less repeatable than those performed in normal eyes. For the maximum keratometry measurement, repeatability limit was 1.73, 1.49, and 1.41 diopters (D) in the stage I-IV keratoconic eyes group, 1.11, 1.02, and 0.98 D in the stage I-II keratoconic eyes group, and 0.61, 0.37, and 1.02 D in the normal eyes group with Orbscan II, OPD-Scan III, and iTrace, respectively. For almost all parameters studied, the repeatability limit was higher in the two groups of keratoconic eyes compared to normal eyes with all three topographers, indicating lower repeatability. Three groups were evaluated: all stage I-IV keratoconic eyes (59 eyes), a subgroup consisting of stage I-II keratoconic eyes (41 eyes), and normal eyes (54 eyes). Repeatability limit and intraclass correlation coefficients (ICCs) of keratometric readings were calculated.įifty-nine keratoconic eyes of 34 patients and 54 normal eyes of 27 patients were included. Where Corneal topographs are Used It is designed to examine the cornea and determine the degree of curvature. Measurements were performed with a combined Placido-scanning slit system (Orbscan II) and two combined Placido-aberrometer systems (OPD-Scan III and iTrace). A corneal topographer is a measuring ophthalmic equipment used to conduct corneal topography.
In this prospective cohort study, patients were recruited between November 2011 and May 2012. To assess the repeatability of the corneal topography functions of Orbscan II (Bausch & Lomb, Rochester, NY), OPD-Scan III (Nidek, Gamagori, Japan), and iTrace (Tracey Technologies, Houston, TX) in keratoconic eyes and in a control group of normal patients.
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