A computer-generated map of the surface contour and curvature of the cornea. Useful for detecting corneal astigmatism, smoothness of curvature, keratoconus, and/or other conditions that may warrant advising against excimer laser care with current technology. in the 1990s, all corneal topography systems measured only the front corneal surface. Beginning in about 2000, systems evolved for measuring both the front and back corneal surfaces. Later-generation imaging systems are also referred to as corneal tomography systems. All these devices intend to display corneal curvature, elevation, and thickness maps.
