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Article
April 1935

OCULAR DIVERGENCE: ITS PHYSIOLOGY AND PATHOLOGY

Arch Ophthalmol. 1935;13(4):639-660. doi:10.1001/archopht.1935.00840040129012
Abstract

I. PHYSIOLOGY

PHYLOGENETIC DEVELOPMENT

In studying any function of the human organism much can be learned from its appearance and development in the phylum, and one is justified in expecting that the rule will hold good in dealing with the function of divergence. As a function, however, it has been discussed little or not at all in the literature, and so one will have to assume the time of its appearance and postulate its subsequent development by a consideration of some allied function. Is there a function the existence of which predicates the existence of divergence and to the smooth working of which divergence is indispensable? The function of convergence seems to fill these requirements. Certainly, without divergence of some sort convergence would be a crippling liability rather than a biologic asset, and nature has arranged her progress to suppress rather than to accentuate biologic weaknesses. One may be fairly safe,

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