Affordable Access

Object surface for applying a modified hartmann test to measure corneal topography.

Authors
  • Mejía-Barbosa, Y
  • Malacara-Hernández, D
Type
Published Article
Journal
Applied optics
Publication Date
Nov 01, 2001
Volume
40
Issue
31
Pages
5778–5786
Identifiers
PMID: 18364869
Source
Medline
License
Unknown

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.

Report this publication

Statistics

Seen <100 times