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February 1957

The Role of Intraocular Pressure in the Development of the Chick Eye: II. Control of Corneal Size

Author Affiliations

New Haven, Conn.
Department of Anatomy, Yale University School of Medicine.

AMA Arch Ophthalmol. 1957;57(2):250-253. doi:10.1001/archopht.1957.00930050260015

Introduction  The increase in size of the vertebrate eye as a whole is regulated by a number of factors. Thus, the results of heteroplastic transplantations of amphibian eye priomordia by Harrison1 and Twitty and Schwind2 have implicated genetic factors. In addition to genetic factors, nutritional factors may influence the enlargement of the amphibian globe.3,4 Recent work with the chick embryo has revealed two additional factors. Not only is intraocular (vitreal) pressure a cardinal factor influencing the increase in the size of the eye, as shown by Weiss and Amprino5 and me,6,7 but the resistance to expansion offered by the eye wall as it elaborates cartilage and collagen appears to be important in progressively decreasing the rate of ocular expansion as development proceeds.7If we turn our attention from the eye as a whole to its parts, we find much observational and experimental work supporting

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