Object Surface for Applying a Modified Hartmann Test to Measure Corneal Topography
Applied Optics, Vol. 40, Issue 31, pp. 5778-5786 (2001)
http://dx.doi.org/10.1364/AO.40.005778
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Abstract
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.
© 2001 Optical Society of America
[Optical Society of America ]
OCIS Codes
(080.2740) Geometric optics : Geometric optical design
(110.2960) Imaging systems : Image analysis
(170.4460) Medical optics and biotechnology : Ophthalmic optics and devices
Citation
Yobani Mejía-Barbosa and Daniel Malacara-Hernández, "Object Surface for Applying a Modified Hartmann Test to Measure Corneal Topography," Appl. Opt. 40, 5778-5786 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-31-5778
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