Accuracy of the Heidelberg Spectralis in the Alignment Between Near-Infrared Image and Tomographic Scan in a Model Eye: A Multicenter Study – Corrected Proof
Purpose: To evaluate temporal changes and predictors of accuracy in the alignment between simultaneous near-infrared image and optical coherence tomography (OCT) scan on the Heidelberg Spectralis using a model eye.Design: Laboratory investigation.Methods: After calibrating the device, 6 sites performed weekly testing of the alignment for 12 weeks using a model eye. The maximum error was compared with multiple variables to evaluate predictors of inaccurate alignment. Variables included the number of weekly scanned patients, total number of OCT scans and B-scans performed, room temperature and its variation, and working time of the scanning laser. A 4-week extension study was subsequently performed to (Read more...)