A Study of the Vascular Network of the Iris Using Flat Preparation
| Autor: | Yoon Joong Song, Yumi Song, Myung Kyoo Ko |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Long posterior ciliary arteries
Cytological Techniques Arterial circle Iris urologic and male genital diseases Veins Iris angiography Ciliary processes Ophthalmic Artery medicine.artery medicine Cadaver Humans cardiovascular diseases Iris (anatomy) business.industry urogenital system fungi Flat preparation Infant Newborn Infant General Medicine Anatomy Fluorescein microscopy Infant newborn female genital diseases and pregnancy complications medicine.anatomical_structure Vascular network Microscopy Fluorescence Original Article business Human iris |
| Zdroj: | Korean Journal of Ophthalmology : KJO |
| ISSN: | 1011-8942 |
| Popis: | Purpose: This study was performed to examine the vascular network of the human iris using flat preparation. Methods: The ciliary body-iris structures were separated from human eyeballs, and a portion of the irises were treated with trypsin to remove the pigment granules. These iris tissues were unfolded and placed onto glass slides using flat preparation, and the vascular network of each iris was examined by fluorescein microscopy. The ciliary body-iris structures separated from the remaining eyes were stained with hematoxylin-eosin without trypsin treatment and were examined by light microscopy. Results: The long posterior ciliary artery formed several branches before entering the iris root, and such branches formed the major arterial circle of the iris with diverse diameters in the vicinity of the iris root and the ciliary process. In the pupillary margin, the iris vasculature network formed a cone shape and then formed an arcade by connecting to adjacent vasculatures. In the vicinity of the collarette, the iris vasculature network formed the minor arterial circle of the iris with diverse diameters perpendicular to the arcade of the iris network located in the pupillary margin. In the pupillary margin, the capillaries were somewhat thick and connected to the irregular traveling iris vein. Conclusions: The above findings explain the human iris vascular network and provide a theoretical basis for the sectoral filling of the iris vasculature seen in fluorescein iris angiography. Korean J Ophthalmol 2009;23:296-300 ⓒ 2009 by the Korean Ophthalmological Society. |
| Databáze: | OpenAIRE |
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