Document Detail


Object surface for applying a modified hartmann test to measure corneal topography.
MedLine Citation:
PMID:  18364869     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
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.
Authors:
Y Mejía-Barbosa; D Malacara-Hernández
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  40     ISSN:  0003-6935     ISO Abbreviation:  Appl Opt     Publication Date:  2001 Nov 
Date Detail:
Created Date:  2008-03-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  5778-86     Citation Subset:  -    
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