Comparison of Artemis 2 Ultrasound and Visante Optical Coherence Tomography Corneal Thickness Profiles

作者：Ursea Roxana; Feng Matthew; Urs Raksha; RoyChoudhury Arindam; Silverman Ronald H^*

来源：Journal of Refractive Surgery, 2013, 29(1): 36-+.

DOI：10.3928/1081597X-20121126-01

PURPOSE: To compare corneal thickness profiles of cross-sections of cornea determined by arc-scanned immersion ultrasound and optical coherence tomography (OCT).
METHODS: Corneas of 28 eyes from 14 participants were scanned in triplicate using the Artemis 2 high-frequency arc-scanned ultrasound system (ArcScan Inc) and the Visante OCT system (Carl Zeiss Meditec). Corneal thickness and reproducibility were compared within 3.5 mm of central cornea in the horizontal plane.
RESULTS: Although highly correlated, Visante central and peripheral corneal thickness values were systematically thinner than Artemis 2 values. Within the central 0.5 mm, the difference was approximately 8 mu m, but the difference increased with distance from the center. Reproducibility for each instrument was comparable, measuring <4 mu m centrally and increasing peripherally.
CONCLUSIONS: Visante OCT measurements of corneal thickness are thinner than Artemis 2 ultrasound values centrally with an increasing difference with peripheral position. Measurement reproducibility was comparable for the two techniques. [J Refract Surg. 2013;29(1):36-41.] doi:10.3928/1081597X-20121126-01

• 出版日期2013-1