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KMID : 0360219760170020127
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Journal of the Korean Ophthalmological Society
1976 Volume.17 No. 2 p.127 ~ p.128
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Retinal Vascular Patterns-Part I. A/V crossings, argyrophilic perivascular network, exogenous retinal vasculitis and arterial annulus
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Abstract
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The present paper will concern the venous changes in the arteriovenous crossings, argyrophilic perivasccular network, exogenous retinal vasculitis and arteriolar annulus.
Material for the study of arteriovenous crossings was obtained post mortem (19 eyes), which was offered from department of ophthalmology, medical faculty, Kyushu University in Japan, while an eye for the study of vascular changes with traumatic global rupture following to exogenous purulent retinal vasculitis was obtained from eyes enucleated surgically.
Material (10 eyes) for the study of argyrophilic perivascular network and arteriolar annuli was obtained from dogs (5 eyes) and bovines (5 eyes). The technique of perparation of the slides was made of flat preparations of the retina that all nonvascular components were digested with tris-buffered 3%-trypsin solution and stained with PAS(periodic-acid Schiff), hematoxylin, eosin and Wilder´s reticulin stain.
Results obtained as follows.
1. Various degree of narrowing of the vein in arteriovenous crossing sites was observed in flat preparation of retinal vessels without any staining technique, which might be related to arteriolar sclerotic changes.
2. An encircling perivascular argyrophilic network consisting of wavy fibers and some externa$yc interlacing argyrophilic longitudinal fibers were observedd in dog retinal arterioles but ooarstrf fibers in venules. Some strehd like intercapillary bridge was argyrophilic in Wilder´s-reticeilin- stain of the hunod: retinal vessels.
3. Retinal venules and its capillaries in a 40-year-old man with traumatic global rupture following to purulent exogenous retinal vasculitis predominantly affected.
The walls of capillaries had multiple aneurysmal dilatations, and in some ruptured area numerous basophilic bodies in H-E. stain were ´observed.
The cells of abnormally dilated capillaries were missing.over wide areas, and in some capillaries predominated loss of endothelial cells.
4. Arteriolar Annulus in positive for periodic-acid Schiff technique was hyper-cellularities in H-E. staining, which did not appear to be different from surrounding cells in arterioles.
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