Share Email Print
cover

Proceedings Paper

Distribution of curvature of 3D nonrotational surfaces approximating the corneal topography
Author(s): Henryk T. Kasprzak
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The first part of the paper presents the analytical curves used to approximate the corneal profile. Next, some definition of 3D surfaces curvature, like main normal sections, main radii of curvature and their orientations are given. The examples of four nonrotational 3D surfaces such as: ellipsoidal, surface based on hyperbolic cosine function, sphero-cylindrical and toroidal, approximating the corneal topography are proposed. The 3D surface and the contour plots of main radii of curvature and their orientation for four nonrotational approximation of the cornea are shown. Results of calculations are discussed from the point of view of videokeratometric images.

Paper Details

Date Published: 22 October 1998
PDF: 11 pages
Proc. SPIE 3579, Ophthalmic Measurements and Optometry, (22 October 1998); doi: 10.1117/12.328307
Show Author Affiliations
Henryk T. Kasprzak, Technical Univ. of Wroclaw (Poland)


Published in SPIE Proceedings Vol. 3579:
Ophthalmic Measurements and Optometry
Maksymilian Pluta; Mariusz Szyjer, Editor(s)

© SPIE. Terms of Use
Back to Top