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Proceedings Paper

Accurate method for measuring oblique astigmatism and oblique power of ophthalmic lenses
Author(s): Erning Wihardjo; Donald E. Silva
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Paper Abstract

The measurement of oblique astigmatism error and its oblique power of ophthalmic lens under identical conditions of the human visual system--such as the distance from the center rotation of the eye to the back vertex surface of the lens--viewing distance, and lens aperture using a Mach Zehnder interferometer is describe.

Paper Details

Date Published: 1 December 1991
PDF: 6 pages
Proc. SPIE 1529, Ophthalmic Lens Design and Fabrication, (1 December 1991); doi: 10.1117/12.50480
Show Author Affiliations
Erning Wihardjo, Polycore Optical Pte. Ltd. (Singapore)
Donald E. Silva, Polycore Optical Pte. Ltd. (Singapore)

Published in SPIE Proceedings Vol. 1529:
Ophthalmic Lens Design and Fabrication
Colin M. Perrott, Editor(s)

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