Object surface for applying a modified hartmann test to measure corneal topography.
- Published Article
- Publication Date
Nov 01, 2001
A modified Hartmann test is proposed for measuring corneal topography. The plane screen with holes used in the typical Hartmann test is replaced with a curved object surface. This object surface yields a plane image for a spherical mirror surface. We show that the object surface is an oval of revolution that can be modeled by an ellipsoid. The plane image will be formed by a square array of circular spots, all with the same diameter. To obtain the square array in the image, we calculated the spatial distribution of the spots on the object surface.
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The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/18364869