Three-dimensional representations of corneal deformations from keratotopography data.
OBJECTIVE
To improve the perception of corneal shape from the data measured by a corneal topography system.


METHODS
A computer program to illustrate the deformation of the cornea measured by corneal topography is described. The deviations from a regular corneal curvature are presented in a three-dimensional (3-D) map. Elimination of the basic curvature in the individual cornea allows the small deformations of the cornea to be seen as shapes and not as power maps.


CONCLUSIONS
The images obtained with the 3-D maps are different from the keratotopographic images. The latter show the deformation of the cornea on a micro-metric scale and are understandable in terms of shape or surgical planning. Using our inborn 3-D perception mechanism provides a better understanding of corneal shape. A shape reconstruction from the keratotopographic image alone is nearly impossible.
Huber
C
C
Huber
A
A
Gruber
H
H
D003315:Cornea / Q000473:pathology* / Q000601:surgery; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D007646:Keratotomy, Radial; D009216:Myopia / Q000473:pathology / Q000601:surgery; D014792:Visual Acuity