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Convergence-Accommodation RelationshipsDescription of a Simple Clinical Test and Its Application to the Evaluation of Isoflurophate (DFP) Therapy
LOUISE L. SLOAN, Ph.D.;
MARVIN L. SEARS, M.D.;
MARIA D. JABLONSKI, F.B.O.A.
AMA Arch Ophthalmol. 1960;63(2):283-306.
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Introduction
The purpose of this study is first to describe a simple test for studying the relationship between the stimulus to accommodation and the accommodative convergence at a fixed near distance, and second to illustrate by case reports the value of graphic analyses of this relationship in classifying oculomotor anomalies and in evaluating various forms of therapy.
Previous Investigations
The ophthalmological literature of 50 or more years ago includes papers describing the use of graphs to depict relationships between convergence and accommodation and amplitudes of relative fusional convergence and divergence. This early work has been reviewed by Morgan.1
In recent years two simpler procedures have been used, particularly in research laboratories of physiological optics, to study the changes in convergence induced by changes in accommodation. In most cases only normal subjects without ocular symptoms have been studied. The two procedures may be designated as the variable-distance method and the
. . . [Full Text PDF of this Article]
Author Affiliations
Baltimore
From the Wilmer Ophthalmological Institute of The Johns Hopkins University and Hospital.
Footnotes
Submitted for publication Oct. 8, 1959.
This work was supported in part by a Fight for Sight Award of the National Council to Combat Blindness, Inc., New York City (Grant-In-Aid G178-C2, Aug. 1, 1958 to July 31, 1959) and in part by Grant B-810 from the National Institutes of Neurological Diseases and Blindness, Bethesda, Md.
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