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Document Type

Research

Abstract

Although visual acuity is of chief concern to the optometrist from the professional standpoint, the physicist should be no less concerned from the standpoint of its applications to work in optics and illumination. Visual acuity is indeed difficult to measure and many types of acuity tests have been devised. The Clason acuity meter and the Snellen chart are the accepted standards used by optometrists. Another test for measuring acuity, which is administered on the stereoscope, is one of many visual tests that has been developed by Betts, Director of Teacher Education, State Normal School, Oswego, N. Y., who worked jointly with the Keystone View Company of Meadville, Penna.

Publication Date

1938

Journal Title

Proceedings of the Iowa Academy of Science

Volume

45

Issue

1

First Page

191

Last Page

194

Copyright

© Copyright 1938 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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