Citation

Ferree CE, Rand G. J. Exp. Psychol. 1920; 3(4): 243-256.

Copyright

(Copyright © 1920, American Psychological Association)

DOI

10.1037/h0068559

PMID

unavailable

Abstract

This paper discusses the relation of the illumination scale to the detection of small errors in refraction and in their correction. Topics include: (1) astigmatism (without a cycloplegic); (2) irregular astigmatism; and (3) astigmatism (with cycloplegic). (PsycINFO Database Record (c) 2012 APA, all rights reserved)