1. Measurement of LASIK Flap Thickness With Anterior Segment Optical Coherence Tomography

    PURPOSE To assess the interobserver variability and agreement of anterior segment optical coherence tomography (OCT) in the measurement of LASIK flap thickness, and to compare the results with intraoperative ultrasound pachymetry measurements. METHODS Thirty-nine eyes of 20 consecutive patients undergoing LASIK with the XP microkeratome (Bausch & Lomb) and ALLEGRETTO Eye-Q laser system (WaveLight Inc) had corneal flap thickness measured with SP-100 ultrasound (Tomey Corp) intraoperatively and with OCT (Visante; Carl Zeiss Meditec Inc) postoperatively. Interobserver assessment was performed by comparing the flap thickness measurements obtained from the same scan by 2 masked, independent observers. Agreement of OCT scan was determined by assessment of 2 different scans of the same eye by the same observer. RESULTS Mean (±standard deviation) flap thickness measured by ultrasound ...
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