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Embryologic and Comparative Anatomic Studies

LEE ALLEN; HERMANN M. BURIAN, M.D.; ALSON E. BRALEY, M.D.

AMA Arch Ophthalmol. 1955;53(6):799-806.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

EMBRYOLOGY

In a previous paper¹ it was shown that no tissue requiring atrophy and resorption is present in the typical chamber angle of the embryonic or fetal eye. A comparison of cell layer counts in fetal and adult eyes showed that there is on the average an increase in the number of cell layers between Schlemm's canal and the pigment epithelium of the ciliary body during the period of cleavage of the angle. The increase appears to be entirely within the ciliary-iris tissue. By contrast, the increase in size of the mass of trabecular tissue and the ring of Schwalbe seems to be due to cell growth and cavitation.

To say that no tissue requiring atrophy is present in the average fetal angle does not mean that excessive tissue is not present in a certain percentage of cases. Excessive embryonic mesoderm is seen, but only approximately in the same . . . [Full Text PDF of this Article]

Author Affiliations
Iowa City

From the Department of Ophthalmology, State University of Iowa College of Medicine.

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