Scheimpflug images furnish precise elevation data of the cornea. Placido images are superior for obtaining accurate curvature data. GALILEI™ combines both.
Although the resolution of Scheimpflug images is high enough to deliver accurate profile data, it is insufficient to calculate central corneal power (curvature data) with acceptable accuracy.
Placido images provide very precise curvature data, even from the central part of the cornea, but they fail to accurately represent small differences in elevation.
GALILEI™ overcomes this limitation by merging Placido and Scheimpflug data, acquired simultaneously by the two techniques, into a comprehensive single data set. This is essential for obtaining highest accuracy for both elevation and curvature data across the entire cornea.