Share Email Print

Proceedings Paper

Multizone Bifocal Contact Lens Design
Author(s): Stanley A Klein; Zhuo-Yan Ho
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A satisfactory bifocal contact lens has not yet reached the marketplace because of deficiencies in the present designs. The two-zone concentric design allows both the near and far images to be present simultaneously, however the image quality is not very good. Recently several new bifocal contact lenses with multiple zones have been suggested. This paper presents computer calculations of the image quality of several of these new designs. The zone-plate design, with an intermediate blaze angle, gives the best image quality of the lenses that were examined.

Paper Details

Date Published: 19 December 1986
PDF: 11 pages
Proc. SPIE 0679, Current Developments in Optical Engineering and Diffraction Phenomena, (19 December 1986); doi: 10.1117/12.939564
Show Author Affiliations
Stanley A Klein, University of Houston (United States)
Zhuo-Yan Ho, University of Houston (United States)

Published in SPIE Proceedings Vol. 0679:
Current Developments in Optical Engineering and Diffraction Phenomena
Robert E. Fischer; James E. Harvey; Warren J. Smith, Editor(s)

© SPIE. Terms of Use
Back to Top