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December 1959

The Ultrastructure of the Capillaries in the Ciliary Body

Author Affiliations

St. Louis
Fight for Sight Fellow of the National Council to Combat Blindness.; From the Departments of Ophthalmology, and Anatomy, and the Oscar Johnson Institute, Washington University School of Medicine.

AMA Arch Ophthalmol. 1959;62(6):949-951. doi:10.1001/archopht.1959.04220060021003

Introduction  During the analysis of the fine structure of the ciliary epithelium (Holmberg, 1957; Holmberg, 1959) in human and rabbit eyes, it was observed that the capillaries in the stroma are built up in a characteristic way, similar to that found in several secretory glands. Although the findings are not unique for the ciliary body, they add to our knowledge of the correlation between structure and function of the ciliary processes.

Material and Methods  In this investigation the same rabbit material has been utilized as was used for the analysis of the nonpigmented epithelium. All fixation was performed in vivo in 1% osmium solution with the animals under general anesthesia (pentobarbital [Nembutal] intravenously). After 10-15 minutes parts of the ciliary body were cut out and fixation was continued for 3-4 hours.The human material consists of three fresh eyes enucleated because of malignant melanoma in the posterior pole. Immediately after

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