The Pentacam measurement process takes less than two seconds and minute eye movements are captured and corrected simultaneously. By measuring 25,000 true elevation points, precise representation, repeatability and analysis are guaranteed. These data points are then used to generate corneal maps used for diagnosis and treatment.
 

The Pentacam images the anterior segment of the eye by a rotating Scheimpflug camera performing a series of slit photographs. This rotating process generates pictures in three dimensions. Because of the rotational imaging, even the center of the cornea can be very precisely measured.
 

An example of the overview map generated by the Pentacam.