TY  - JOUR
PY  - 1920//
TI  - The use of the illumination scale for the detection of small errors in refraction and in their correction
JO  - Journal of experimental psychology
A1  - Ferree, C. E.
A1  - Rand, Gertrude
SP  - 243
EP  - 256
VL  - 3
IS  - 4
N2  - 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)<p /> 
LA  - 
SN  - 0022-1015
UR  - http://dx.doi.org/10.1037/h0068559
ID  - ref1
ER  -