7

436
AM J OPTOM & PHYSIOL OPTICS
Vol. 64, No. 6
31:148—59.
8.
Hofstetter HW. An ergographic analysis of fatigue
of accommodation. Am J Optom Physiol Opt
1943;20:1 15—35.
9.
Marg E. An investigation of voluntary as distin
guished from reflex accommodation. Am J Optom Physiol Opt 1951 ;28:347—56.
10.
Cornsweet TN, Crane HO. Training the visual ac
commodative system. Vision Res 1973;13:713—5.
11.
LJu JS, Lee M, Jang J, Ciuffreda KJ, Wong JH,
Grisham D, Stark L. Objective assessment of accommodation orthoptics: I. Dynamic insufficiency. Am J Optom Physiol Opt 1979;56:285—94.
12.
Morris CW. A theory concerning adaptation to
accommodative impairment. Optom Wkly
1959;59:255—62.
13.
Hoffman L, Cohen AH, Feuer G. Effectiveness of
non-strabismus optometric vision training in a private practice. Am J Optom Arch Am Acad Optom 1 973;50:813—6.
14.
Daum KM. Predicting results in the orthoptic treat
ment of accommodative dysfunction. Am J Optom Physiol Opt 1984;61:184—9.
lb.
Daum KM. Accommodative dysfunction. Doc
Ophthalmol 1 983;55:1 77—98.
16.
Cooper J, Selenow A, Ciuffreda KJ, Feldman J,
Faverty J, Hokoda SC, Silver J. Reduction in asthenopia in patients with convergence insufficiency after fusional vergence training. Am J Optom Physiol Opt 1983;60:982—9.
17.
Siegel S. Nonparametric Statistics for the Behav
ioral Sciences. New York: McGraw-Hill, 1956.
18.
Sidman M. Tactics of Scientific Research. New
York: Basic Books, 1960.
19.
Hersen MH, Barlow DH. Single Case Experimental
Designs. New York: Pergamon, 1976.


AUTHOR’S ADDRESS:
Jeffrey Cooper
Department of Clinical Science
State College of Optometry
State University of New York
100 East 24th Street
New York, New York 10010-3677

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