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BERGENSKE PETER D.; RAASCH, THOMAS W.
Optometry and Vision Science: March 1982
instruments/techniques: PDF Only
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Abstract

This report describes the design of a variable focus telescopic system for a low vision patient who wanted to be able to see at numerous fixed working distances. A simple and effective means of mounting the telescope onto an existing spectacle lens is described. The discussion presents an analysis of the optical principles used and a formula for determining the equivalent power of a nearpoint telescope.

Received February 16, 1981; revision received May 20, 1981.

*Optometrist.

Presented at the Annual Meeting of the American Academy of Optometry in Orlando, Florida 1981.

AUTHOR'S ADDRESS:

Peter D. Bergenske

4653 Verona Road

Madison, Wisconsin 53711

© 1982 American Academy of Optometry