This optical mapping or corneal topography system mapping system is a diagnostic tool that shows the overall architecture of the cornea including surface power, thickness, front and back shape.
Using an illuminated ring pattern and a beam of light that is shined across the cornea, the image sensors in the Orbscan IIz acquire over 9000 points of data in less than 2 seconds. That data is transformed into a wealth of information about the architecture of the cornea. The Orbscan IIz is unique among corneal topographers in its ability to image the posterior surface of the cornea. Early signs of certain corneal diseases or abnormalities are seen first on the posterior corneal surface.